Conversation so far:
What is Melanie C's music style?
Melanie Chisholm's music is generally pop and rock.
What group did Melanie C write for?
Melanie Chisholm has received co-writing credits for most of the songs recorded with Spice Girls and her solo efforts.

Question: What style did her group have?
Self-contained rewrite: What style did Melanie C's group have?