Conversation so far:
who developed british folk rock?
Sandy Denny began steering the group towards traditional British music, most notably on the song A Sailor's Life, which laid the groundwork for British folk rock.
what did Fairport Convention do next after the song A Sailor's Life?
Both Denny and Hutchings left before the year's end; the latter replaced by Dave Pegg, who has remained the group's sole consistent member to this day.
what was Fairport Convention's greatest achievement?
Fairport Convention's achievement was not to invent folk rock, but to create a distinctly English branch of the genre, which would develop alongside, and interact with, American inspired music.

Question: did they release any albums?
Self-contained rewrite: did Fairport Convention release any albums?