LDS Music glitch

I'm having trouble with the LDS Music app. When I try to create a playlist and download a song from the Children's Songbook all the songs will download not just the one I want. It doesn't happen with all the songs just certain ones. Please help me!

By "download", do you mean that the audio files download from the internet, or something else downloads?

By default in the current version of LDS Music for iOS, all of the audio files for your language will download in the background the first time the app runs.