Conversation so far:
What album did they release in1976?
Black Market.
What was the music style on the album?
melody-oriented, concise forms, which also offered a greater mass-market appeal.
did the band stay together during this time?
Prior to his departure, Johnson played on all but two of the new album's tracks.
Who was his replacement?
His replacement was Jaco Pastorius.

Question: Was he a good fit for the band?
Self-contained rewrite: Was Jaco Pastorius a good fit for the band Weather Report?