A stubborn composer refused to change a repeating sequence of notes even after being asked to repeatedly. People eventually started calling it the "Obstinato".
Music is the only subject in which passing notes are allowed during exam.
Too much string plucking has a tendency to pizz people off.
Your momma's so dumb......when someone asked her to check out Youtube, she came back with a bend in the water pipe. =)
And one pictorial joke which I put on my dp as well.

It doesn't matter which way you look at it. All angles subtended by the same chord are equal.
Hope everyone had even more laughs.
Kenneth