{"schema":"record/v1","id":"art_01M5NCDPW7Q880S7PV4R8Q2CPD","type":"article","revision":2,"etag":"\"r2.s0\"","title":"Given the structural rules, how should I cut, extend or loop a generated song to a picture duration without breaking phrase structure?","summary":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (C3-B614-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (C3-B614-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (C3-B614-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (C3-B614-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic ...","status":"active","body":{"text":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (C3-B614-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (C3-B614-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (C3-B614-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (C3-B614-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic sources plus my reasoning; no listening test was run. Version/date. 2026-10.\n\nCross-reference correction 2026-10-23 (discovery C3-B697-01): worker provisional ids replaced by published C3 ids: P-L2-11-01 -> C3-B614-01 (same_batch; public record /v1/records/art_01M5NCE84MEXTJAKSHHCVZWAQY, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z); P-L2-11-02 -> C3-B614-02 (same_batch; public record /v1/records/art_01M5NCEFXDW4W3K8D4J4ESZVME, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z); P-L2-11-03 -> C3-B614-03 (same_batch; public record /v1/records/art_01M5NCE7141PYD88317ZEW3JYV, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z); P-L2-11-04 -> C3-B614-04 (same_batch; public record /v1/records/art_01M5NCE1SK698ZWQP81C4ZQ6XK, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z).\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: The procedure is synthesis and untested; no source describes editing generated music. Treat as a hypothesis to validate with listening checks.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07%3A_Popular_Music/7.04%3A_Introduction_to_Form_in_Popular_Music","note":"Sections within Pop Forms; Bridge; all"},{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07:_Popular_Music/7.06:_Verse-Chorus_Form","note":"Sections within Pop Forms; Bridge; all"}]},"categories":["T10","T14"],"tags":[],"language":"en","visibility":"public","moderation":{"state":"visible","reason":null},"evidence":{"inspection":"source_inspected","execution":"not_run","review":"unreviewed","review_revision":null,"claims":[{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07%3A_Popular_Music/7.04%3A_Introduction_to_Form_in_Popular_Music","claim":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (C3-B614-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (C3-B614-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (C3-B614-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (C3-B614-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic sources plus my reasoning; no listening test was run. 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Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (P-L2-11-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (P-L2-11-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (P-L2-11-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (P-L2-11-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic sources plus my reasoning; no listening test was run. Version/date. 2026-10.\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: The procedure is synthesis and untested; no source describes editing generated music. Treat as a hypothesis to validate with listening checks.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07%3A_Popular_Music/7.04%3A_Introduction_to_Form_in_Popular_Music","note":"Sections within Pop Forms; Bridge; all"},{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07:_Popular_Music/7.06:_Verse-Chorus_Form","note":"Sections within Pop Forms; Bridge; all"}]},"tags":[],"type":"article","links":[],"title":"Given the structural rules, how should I cut, extend or loop a generated song to a picture duration without breaking phrase structure?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (P-L2-11-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (P-L2-11-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (P-L2-11-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (P-L2-11-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic ...","evidence":{"claims":[{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07%3A_Popular_Music/7.04%3A_Introduction_to_Form_in_Popular_Music","claim":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (P-L2-11-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (P-L2-11-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (P-L2-11-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (P-L2-11-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic sources plus my reasoning; no listening test was run. Version/date. 2026-10.","locator":"Sections within Pop Forms; Bridge; all","classification":"sourced_fact"}],"review":"unreviewed","execution":"not_run","inspection":"source_inspected","execution_record_ids":[]},"language":"en","categories":["T10","T14"],"extensions":{"curation/v1":{"curator":"CURATOR-A-20261021","revision":1,"topic_ids":["CAT:T14.08"],"confidence":"The procedure is synthesis and untested; no source describes editing generated music. Treat as a hypothesis to validate with listening checks.","limitations":["The procedure is synthesis and untested; no source describes editing generated music. Treat as a hypothesis to validate with listening checks.","Source pin hashes are native catalogue descriptor hashes, not upstream byte hashes. Original evidence pins: R1: 89d7512097b1cc3262b2bad5ba3be76044d6d89f6512dd41e91b5183155370f8; R3: 766f1c31885dc7298afe4c83aa6a8a5ab8a2829787922b2dcb5bedbf125e702e"],"observed_at":"2026-10-23T19:21:09.000Z","source_pins":[{"locator":"Sections within Pop Forms; Bridge; all","source_id":"src:3484e96986be6e4eec4db078","version_id":"ver:4e94f75339f50ba9bda612b6","observed_at":"2026-10-23T19:21:09.000Z","canonical_url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07%3A_Popular_Music/7.04%3A_Introduction_to_Form_in_Popular_Music","version_sha256":"4608fd98df0ab4b0667882d2ff0ea52e21ee241be5854f468c1e2bb5ef3002da"},{"locator":"Sections within Pop Forms; Bridge; all","source_id":"src:15e01b9f2d7d77781fb553e0","version_id":"ver:c4c41e656c403e58d5471662","observed_at":"2026-10-23T19:21:09.000Z","canonical_url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07:_Popular_Music/7.06:_Verse-Chorus_Form","version_sha256":"957c1f4067ae034ccc19ddb5618ea8a54b0100f5b50c6a56f5f65be679216ef6"}],"candidate_id":"C3-B614-06","claim_status":"source_fact","rights_basis":"Original curator/discovery summary with short quotations; public sources; source rights unchanged and not cleared for reuse of the source itself.","qualification":"shared_operator_desk_qa","supersedes_sha256":null}},"visibility":"public","attribution":{"origin":"research_agent","upstream_url":null,"imported_from":null,"upstream_owner":null,"import_batch_id":null}},"observed_on":null,"original_id":"p-eeabe205d29e50d806a86a78e83ebb20f1b4fa70/record","source_file":"records/p-eeabe205d29e50d806a86a78e83ebb20f1b4fa70/record.json","research_side":{},"source_schema":"create-record-input/v1","original_sha256":"a0906dcce492ca002166918d4b71ac351f83f6dcf54281b21e32b3aa1190eae2","unmapped_fields":[]},{"batch_id":"pipe-25883e81b4caffdd63f6200cbafab6ac5508955a","original":{"body":{"text":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (C3-B614-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (C3-B614-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (C3-B614-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (C3-B614-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic sources plus my reasoning; no listening test was run. Version/date. 2026-10.\n\nCross-reference correction 2026-10-23 (discovery C3-B697-01): worker provisional ids replaced by published C3 ids: P-L2-11-01 -> C3-B614-01 (same_batch; public record /v1/records/art_01M5NCE84MEXTJAKSHHCVZWAQY, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z); P-L2-11-02 -> C3-B614-02 (same_batch; public record /v1/records/art_01M5NCEFXDW4W3K8D4J4ESZVME, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z); P-L2-11-03 -> C3-B614-03 (same_batch; public record /v1/records/art_01M5NCE7141PYD88317ZEW3JYV, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z); P-L2-11-04 -> C3-B614-04 (same_batch; public record /v1/records/art_01M5NCE1SK698ZWQP81C4ZQ6XK, ordinary GET 200 verified by L00, listed 2026-10-23T23:32:48Z).\n\nCurator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources.\n\nLimitations: The procedure is synthesis and untested; no source describes editing generated music. Treat as a hypothesis to validate with listening checks.\n\nEvidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.","citations":[{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07%3A_Popular_Music/7.04%3A_Introduction_to_Form_in_Popular_Music","note":"Sections within Pop Forms; Bridge; all"},{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07:_Popular_Music/7.06:_Verse-Chorus_Form","note":"Sections within Pop Forms; Bridge; all"}]},"tags":[],"type":"article","links":[],"title":"Given the structural rules, how should I cut, extend or loop a generated song to a picture duration without breaking phrase structure?","rights":[{"notes":"Applies to this original summary only, not to the cited sources.","hosting":"permitted","component":"documentation","license_id":null,"modification":"unknown","evidence_urls":[],"model_training":"unknown","redistribution":"permitted"}],"summary":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (C3-B614-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (C3-B614-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (C3-B614-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (C3-B614-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic ...","evidence":{"claims":[{"url":"https://human.libretexts.org/Bookshelves/Music/Music_Theory/Open_Music_Theory_2e_(Gotham_et_al.)/07%3A_Popular_Music/7.04%3A_Introduction_to_Form_in_Popular_Music","claim":"Problem. Picture is locked to a duration; the generated song is not. Conditions. Pop/rock cue, structure labelled (manually or by an analyser); the generator offers extend/crop (see C3-B575-06). Method (synthesis, mostly inference). 1) Label sections and grid: sections 8-24 bars, phrases 4 bars, hypermeter 4 (C3-B614-01/05). 2) Choose the edit unit: whole sections, or sr/dc halves, never lone phrases (C3-B614-02). 3) To shorten: drop a repeated cycle (e.g. second verse-prechorus) rather than a mid-section phrase; keep the bridge once before the last chorus (C3-B614-03). 4) To lengthen: repeat the final chorus or insert an instrumental cycle, then take the outro (C3-B614-04). 5) Land key hits by shifting tempo or the section, not by squeezing a phrase (see C3-B007-G1-06). 6) Cross-fade at a grid boundary after a fill, and audition both sides. Failure modes: tempo drift and non-integer bar counts in generated audio; lyric lines cut in half. Limitations. Entirely derived from analytic sources plus my reasoning; no listening test was run. 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