SongExtender

SongExtender is an AI tool that lets you take a piece of music you own and extend it from a specific moment. Instead of looping or fading out, you pick the exact second where the new composition should begin, and the tool generates two complete, private continuations. It handles MP3 files up to 100 MB and eight minutes long, and each generation gives you two independent versions to compare.

The workflow is straightforward: upload your audio, preview it in the browser, and drag a marker to the handoff point. You can add optional lyrics for the new section and a short style direction — like "restrained bridge with same drums and bass, then open into a wider final chorus." SongExtender uses its own V5.5 model and keeps the source audio private until you hit generate. Results stay in your account for about seven days, and you can download them as real MP3 files. The interface has a Simple mode for quick extensions and a Custom mode with more controls like vocal choice and verified output.

This tool is built for songwriters who want to develop a demo into a full arrangement, video editors who need a longer musical cue, podcast producers extending an intro or outro, and game audio teams working on interactive music. It's not a general-purpose music generator — it's focused on one job: continuing an existing piece of music from a precise point. The pricing is straightforward: a free trial for new accounts, pay-once packs from $9.90, or subscriptions at $19.90/month and $96/year.