How do I add vocals or sing over my Boomy songs?

After tapping "Add Vocal" from a saved song, you can choose to add Custom vocals or try an experimental Auto-Vocal. Custom vocals allow you to sing, rap, or add a top-line to your song. Auto-Vocal, a beta feature, turns a short audio phrase or sample into an algorithmic vocal line. You can endlessly reject or save new Auto-Vocal options after you’ve added your audio phrase or sample.

Please note: you must upload a WAV file for both vocals if you previously recorded them.