Conversation so far:
How many original members of Curved Air were in the new Curved Air?
Sonja Kristina and Mike Wedgwood
Were either Sonja Kristina or Mike Wedgwood the lead singer for the new curved air?
Sonja Kristina
Who played guitar for the band curved air with Sonja Kristina and Mike Wedgwood?
Kirby Gregory

Question: What did Sonja Kristina do?
Self-contained rewrite: What did Sonja Kristina do with the band curved air?