Hello! I'm really sorry if this is a long post, I've never posted here before. Um, I have been playing for a while, and around Dec/Jan of the fifth year, I started a fourth page of songs. I was going to record a new song for an album, but the third page of songs is completely gone. Also worth noting is when I select the song to record, I get the second page shown first. I waited before trying again to see if it'd fix itself (hence why it's in April). Quitting and reloading didn't help. I also tried using the updater, didn't help. I'm currently on the "get popular" goals (during the music award nomination), if that helps narrow down what's happening.
