SOLVED. YA: Parallel universes, a touring rock band, Eurydice [s]

[Saffron]

I'm going to guess that the book is YA because I checked it out from my high school library when I was a student.

-The book had some kind of meta title. Like "do not read this book" or something. But not that, obviously, or else I wouldn't be here haha
-In the plot, there were two parallel universes, and two sets of characters. Each character's counterpart had a similar name (began with the same letter or so)
--One of the character's names was Eurydice.
-One of the sets of characters was a touring rock band.
-There was some sort of romantic subplot going on.
-I feel like the cover used red, black and white.

I've been searching for this book for years--hopefully this group can help me out. Thank you!

[[deleted user]]

This'll be My Favorite Band Does Not Exist :)

[Lobstergirl, au gratin]

Saffron, was Rahid's suggestion your book or are you still looking?

[Saffron]

Sorry, thought I had replied to this!
Yes, this is the book!
Thank you :)

[Lobstergirl, au gratin]

Great.