These are the initials of band members........what are the bands?

Remember bands often have more than one line up and some of these may be the more obscure ones.

1) PG, MR, SH, TB, PC..................easy one to start.
2) CS, TH, GD, SH & AW
3) DF, PB, AW & AL
4) FM, SC, FP-M, RM DW
5) RT, PM, JH, GE & JL
6) GC, CB, TI & IA

Probably too easy for you guys but worth a shot....