Conversation so far:
How was Melanie C's style described?
Melanie C's style is generally pop and rock.
Did Melanie C's style of pop and rock stay the same?
She also released an album of show tunes.
Was Melanie C's style influenced by anything?
Feminist themes explored by Madonna and Bananarama were carried out during her solo career.

Question: What other issues?
Self-contained rewrite: What other issues besides Girl Power did Melanie C address in her music?