Conversation so far:
What happened in 1977 to Journey the band?
Journey's album sales did not improve and Columbia Records requested that they change their musical style and add a frontman, with whom keyboardist Gregg Rolie could share lead vocal duties.

Question: Why did they change their musical direction?
Self-contained rewrite: Why did Journey the band change their musical direction by adding a frontman, with whom keyboardist Gregg Rolie could share lead vocal duties?