ACE-Step 1.5 XL Prompting

ACE-Step XL uses the same control pattern as ACE-Step 1.5 with a larger 4B DiT decoder.

Core fields

• task_type: usually text2music, or another supported transform task when the source cue requires it
• caption: overall genre, instruments, mood, atmosphere, timbre, vocal identity, production, and progression
• lyrics: lyric text plus section and temporal performance information. For instrumental score, use [Instrumental] and structure markers as needed
• bpm: 30 to 300 when a fixed tempo matters
• keyscale: musical key when useful
• timesignature: meter when useful

Workflow