Ok I have to get in on this one cause the timing is perfect. I am defaulting to his last name though!
A - Abba
B - Bananarama
C - Carol King
D - Duran Duran
E - Englebert Humperdink (did I spell that correctly?)
F - Fowler and Branca - they play the New Age type music.
G - Josh Groban...
Sorry if I stole "J"'s thunder...had to get my guy!