Do to this all you need to do is think of your favorite song and get some musical relating words (For example my favorite song atm is a cover by a band named Pentatonix)
Now just write:
Something like
My favorite song is Cheerleader by a band named Pentatonix.
The beast and musical notes used in the song are hard to reach.
And so on, all you need to do is look up some musical terms and add them in with the paragraph.