At any moment, Suno can update their platform — new models, new vocal engines, new rules, or even changes that affect old songs. When that happens, some tracks in your history can: - disappear - sound different - lose the exact tone you loved - become unreplayable - or get replaced by updated model behavior That’s why you should SAVE EVERY SONG ASAP. MP3 is fine… but WAV files sound way better and give you the highest-quality version of your music — especially if you plan on releasing, mixing, or pitching for sync. If you like a track, download it immediately. Protect your work before the next update hits.