#2, I like the simple/clean font and I like the microphone, which could be an interesting feature. The hat doesn't necessarily work - a bit too "old school" but I like the direction of it.
#1, Same as #2 but doing more with the microphone cord. Could be cool as long as it doesn't get too "busy".
#3, Too much emphasis on the hat, but I like the circular wrap-around of the microphone cord. I wonder what would happen if there was some type of globe in the middle. We need to find a way to replace the hat with something cool.
#11 is better than it was with the top hat. However, it's a little too "friendly" - meaning it's as if the brand is for a music school or something like that. It needs to be more for a band and have a bit of an "edge" to it, if that makes sense. I'm keeping it in the rankings because I like your ideas with the microphone and with the music notes, but it feels a little "safe" to me right now....
Not sure if that helps, but thanks for working on it and improving.