Conversation so far:
What happened in 1965 to Billy Joel?
Billy Joel joined the Echoes, a group that specialized in British Invasion covers. The Echoes began recording in 1965.
Was the Echoes successful?
In late 1965, the Echoes changed their name to the Emeralds, and then to the Lost Souls.
Did the the Echoes release any albums?
What else did Billy Joel do in his early career?
Billy Joel left the Echoes in 1967 to join the Hassles, a Long Island group that had signed with United Artists Records.

Question: Did he stay with that group long?
Self-contained rewrite: Did Billy Joel stay with the Hassles long?