Continuing with the same lineup, Weather Report recorded the "Domino Theory" album in 1984, with Hakim stepping into Jaco Pastorius' old role as Zawinul's co-producer. The album was Weather Report's first album to employ drum machines and samplers (the Emulator), deepening the band's involvement with cutting-edge music technology, and also featured a guest vocal from Carl Anderson. However, by this point in time the band's profile was beginning to suffer due to the revival of more traditionally styled jazz, which made it harder to market jazz fusion.