Thank you!
As far as the number of songs, currently in the game, there are 4 (or 2, depending on how you want to count them) songs - 3 different versions of the song that switch around during the rhythm section and the main menu/shopping song
I would've loved to add more songs so you could have more options during the rhythm sections, but within a week I quickly ran out of time
In any case, I appreciate you playing it and I'm glad you liked it!