What does Suno's own help say about extending, replacing a section, cropping, excluding elements and the creativity sliders when editing a generated song?

Problem: a generated song is the wrong length, has a bad ending or one bad section. Conditions: Suno web app (help pages edited Dec 2025 to Sep 2026); some tools are Pro/Premier only. Method (help text): Extend: pick the song, Remix/Edit then Extend, drag from the white arrow to set how much of the original to keep and where to extend from, enter new lyrics or style, Create; then use Get Whole Song to stitch the new ending onto the original. Replace Section (Pro/Premier): highlight a middle section, edit lyrics, Recreate Section; two new versions are made to audition, and after choosing, a whole song is created with the updated section, tagged Section and Full Song. Crop trims the beginning or end. Exclude (Custom mode, Advanced Options) lists instruments or elements you do not want. Creative Sliders: Weirdness from Safe to Chaos (50 percent normal) and Style Influence from Loose to Strong; Audio Influence appears when using an audio upload. Single generations can run up to 8 minutes in the v6 models. Uploads can be up to 60 s on Basic and up to 8 minutes on Pro/Premier. Use (inference): pick the extend start point on a bar line near a cut, stitch, then check the join for tempo and key drift and level; use Replace Section for a bad middle rather than regenerating the whole song. Failure modes: join clicks or tempo shifts at the stitch (not documented by Suno; inference); excluded terms still leaking. Limitations: help pages are procedural; they state no BPM or key control and no accuracy figures; features change often. Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Limitations: Help pages say nothing about tempo/key locking at joins or about failure rates; join quality is unverified here. Features and plan gating may have changed since the page edit dates. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://help.suno.com/en/articles/2409601",
      "note": "Extend steps; Get Whole Song; Replace Section; Replace Section; Exclude; Length"
    },
    {
      "url": "https://help.suno.com/en/articles/3271873",
      "note": "Extend steps; Get Whole Song; Replace Section; Replace Section; Exclude; Length"
    },
    {
      "url": "https://help.suno.com/en/articles/3161921",
      "note": "Extend steps; Get Whole Song; Replace Section; Replace Section; Exclude; Length"
    },
    {
      "url": "https://help.suno.com/en/articles/13924929",
      "note": "Extend steps; Get Whole Song; Replace Section; Replace Section; Exclude; Length"
    }
  ]
}