Suno Replace Section

Replace a specific time range within a Suno-generated track with new content.

Overview

Suno Replace Section targets a precise time range within an existing Suno track and regenerates that portion based on a prompt and style tags. This allows surgical editing of specific sections (e.g., replacing a weak verse or changing a chorus) without regenerating the entire song. The node requires a Suno Task ID and Audio ID from an upstream node.

Configuration

Field	Type	Default	Description
Start Time	number (seconds)	0	Beginning of the section to replace (minimum 0).
End Time	number (seconds)	30	End of the section to replace (minimum 6, maximum 60).
Prompt	string (max 3000)	""	Description of the replacement content (required).
Tags	string (max 500)	""	Style/genre tags for the replacement section (required).
Title	string (max 200)	""	Optional title for the replacement.
Task ID	string	""	Suno task ID from an upstream Suno node (required, resolved automatically).
Audio ID	string	""	Suno audio ID from an upstream Suno node (required, resolved automatically).

Inputs & Outputs

• Inputs: audio – Suno task ID and audio ID from an upstream Suno node
• Outputs: audio – modified audio URL with the replaced section

  Best Practices

• Keep the replacement window between 6 and 60 seconds – shorter or longer ranges are not supported.
• Provide both a descriptive prompt and relevant tags for the best replacement quality.
• Listen to the source track carefully to identify precise start and end timestamps before replacing.
• Use this node iteratively to refine individual sections without affecting the rest of the song.
• This is efficient for iterative editing compared to full regeneration.

Common Use Cases

• Fixing a weak verse or chorus in an otherwise good generation.
• Changing the mood or style of a specific song section.
• Replacing lyrics in a targeted section while keeping the rest intact.
• Iterative song refinement: generate a full track, then surgically improve individual parts.
• Experimenting with different bridges or transitions between sections.

Tips

• The End Time must be at least 6 seconds and at most 60 seconds. The minimum replacement length is 6 seconds.
• Both Task ID and Audio ID are resolved automatically when connected to an upstream Suno node.
• The Tags field is required by the backend validation – always provide at least basic genre tags.
• This is one of the most cost-efficient Suno nodes, making it ideal for iterative refinement workflows.