If you lose your phone or have to redownload The Lyrics App for any reason, rest assured that all of the songs you've written will still be available and will automatically be synced to your device after you open the app while you are logged in to your iCloud account on your device.
iCloud Drive: All of your songs, lyrics, and melody recordings will now be backed up to your iCloud Drive.
iCloud Backup: All of your songs, lyrics, and melodies will now be safely backed up to your iCloud (as long as you have storage available, of course).
This feature will also keep The Lyrics App synchronized across all of your devices that are logged in to the same iCloud account.
Each song folder contains a text file with the lyrics of the song, as well as a folder containing all of the recordings for that song.