Professor Punsley's Puns for the Win, Chapter 1: Puns-4-3

Proceed to Chapter 2: Puns-4-4, where the puns get even more "punderful"

Or, if you're feeling "punderwhelmed", go to Chapter 3: Puns-4-5, where the puns are "pulled apart"

Today's featured pun:

Why did the cat join a band? Because it wanted to be a purr-cussionist!

A picture of a cat on a drum set