Heavy Weather is the eighth album by Weather Report, released in 1977 through Columbia Records. The release originally sold about a half million copies which would prove to be the band's most commercially successful album. Some consider it to be Weather Report's best album artistically as well. Heavy Weather received an initial 5 star review from Down Beat magazine and went on to easily win jazz album of the year by the readers of that publication. It is the band's second album with bassist Jaco Pastorius. On Black Market, Pastorius played on two of the seven tracks, but here he is a full member of the band.