#19 I like the half full martini glass but the stem being a note looks a bit awkward. Nice try though. I'm interested to see what you come up with next.
#52 - #57 I really think #49 is the best of this type of logo. I don't think you need to keep tryin variations on it. If you want to go in a completely new direction like using the mascot I posted from my partners site I would love to see it.