To me the font doesn't particularly go with the rest of the design. The font is quite curvy where as the design is very sharp. I also think that with the current layout it looks like an angry face with a big nose, which does put some humour to the logo if you see it like that but that's probably just me being weird.
On another note, personally I don't think the tie really represents the idea of "rock star". If the tie is necessary may I suggest it be thinner, a bulky tie to me conveys a more up-market style.
I know it's hard sometimes when you are branding something similar to a well known brand but the best thing you can do is try and stay clear of creating a logo with similarities. A logo should be original and unique to a company, take jamie's advice and with it produce a few different ideas with the different ideologies of the phrase "rock star" but a good start none the less