Neume

change_lyrics

Destructive

Change the words of one part of one of their songs (a part 5–30 seconds long), sung again in the same voice; the rest of the song stays as it is. Makes a new song and keeps the original. Costs 1 credit(s). Call get_song_parts first to find the part, write the new lines with them, and only call this once they agree to the new lines. Hosts that show MCP Apps draw a card that shows its progress and then plays it.

Input Schema

TableJSON Schema

Name	Required	Description
`part`	Yes	The part to change, an id from get_song_parts (e.g. chorus#2)
`lines`	Yes	Every line sung there after the change: the new lines where they change, the old ones word for word where they don't
`songId`	Yes	One of their songs
`to_line`	No	Last line of the part to change (1-based); leave out for the whole part
`from_line`	No	First line of the part to change (1-based); leave out for the whole part
`little_kept_ok`	No	Only after telling them that very little of the song is kept around the part and they chose to go ahead anyway

Output Schema

TableJSON Schema

Name	Required	Description	Default
`status`	Yes
`message`	Yes
`songIds`	Yes
`estimatedTime`	Yes

Schema Changelog

Changes observed during successful MCP inspections.

Changed1 schema field changedOct 10, 2026

addedInput schema / properties / little_kept_ok

Added value: +{
+  "description": "Only after telling them that very little of the song is kept around the part and they chose to go ahead anyway",
+  "type": "boolean"
+}

First observedOct 9, 2026

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