Lacuna

About Lacuna

Lacuna is an AI music generation platform that creates original songs and instrumentals from text descriptions, covering vocals, structure, stems, and mastering. Users describe a style, mood, or scene and receive a generated track that can be refined through extending sections, replacing parts, or remixing into a new style. The platform also includes a lyrics tool that drafts and refines lyrics line by line, and a stem-splitting tool that separates uploaded tracks into vocals, drums, bass, guitar, piano, and other components for remixing, sampling, or karaoke use.

Beyond core music generation, the platform provides a set of MIDI and notation tools, including a text-to-MIDI generator, sheet music and PDF-to-MIDI transcription, MP3-to-MIDI conversion, MIDI-to-sheet-music rendering, and a browser-based MIDI editor. Additional utilities include an album cover generator, song name generator, MP3 tag editor, AI mastering against a reference track, an AI radio station with focus/sleep/nature stations, an LRC (timed lyrics) generator, a lyric video maker, a vocal remover, online autotune, an audio looper, and a mashup maker.

The product supports multiple AI music models within one generator, letting users generate the same song across different models and switch between them. Generated tracks include automatic BPM and key detection, and output is described as copyright-free, cleared for commercial use, with the commercial license issued in the user's name. Lacuna also offers a REST API, a TypeScript SDK, an MCP server, and a CLI toolkit for programmatic music generation. Payment is available either through subscription or non-expiring credits purchased for use.

Key features

• Generate original songs and instrumentals from a text description
• AI lyrics writing with rhyme, syllable, and line-refinement tools
• Split any track into 6 clean stems (vocals, drums, bass, guitar, piano, other)
• Online MIDI editor with generation, sheet music, and DAW export
• Remix, extend, or rewrite a selected section of an existing track
• Royalty-free commercial license on all generated music

Frequently asked questions