Build an AI song generation platform for creators and marketers with these features:
1. Prompt-to-song flow: describe genre, mood, topic, and instruments, and get a full track with vocals (generation itself via a licensed music API like Suno or Udio; do not attempt to train a music model).
2. Lyrics mode: paste or generate lyrics first, then set them to music, with verse and chorus structure control.
3. Song library per user with playable tracks, the prompts that made them, and version history.
4. Extend and remix options: continue a track for another 30 seconds, regenerate an instrumental version, or restyle an existing song.
5. Stem or instrumental export for creators who want to record their own vocals over the track.
6. Genre and mood presets with one-tap combos: lofi study, epic trailer, country storytelling, and corporate upbeat.
7. Share pages for each song with a player, auto-generated cover art from the track title and mood, and a public link.
8. Commercial-use licensing tiers: a free personal tier, and a paid tier that grants a commercial license and MP3 downloads, with clear terms stating exactly what the music API permits.
9. Stripe subscription with per-song credits for pay-as-you-go users.
10. A moderation check that flags generated lyrics too close to known copyrighted songs before publishing.
11. Creator dashboard: songs generated, credits used, downloads, and license records for each track.