#4 - Like the idea, but the font is too small and we're looking for something a little more complex. Try incorporating some Letterform with the J of 'Jess' and the P of 'Pollard'. #1 - Like the structure of the logo, but would be great to lose the sax (there's no sax in Jess' band). Try and incorporate piano keys possibly? #3 - Less letter-form with this one, but explore possibility of super-imposed text over logo 'JP'.
#7 is good, however it's difficult to tell that it's piano keys. Try something a little different. #5 is unfortunately not on the right track - cannot tell that it's the letter's "J" and "P". Try to make it less elegant and more raw, and incorporate a musical element into the logo.
Let's return to the simplicity of #4, but with tiering displayed in #7? Also, would be good to have the font for "Pollard" in #7 slightly more fluid. Try some other colours too, and get rid of the piano keys in #7.