For the next set of studio sessions, Weather Report added a new Brazilian percussionist (Alyrio Lima) and a new drummer - Chuck Bazemore of The Delfonics. Bazemore turned out to be unsuitable for the band and departed early in the sessions, with none of his recorded contributions being retained. Instead, the band called in the former Herbie Hancock drummer Leon "Ndugu" Chancler, who had been working on another project in an adjacent studio. Ndugu recorded with Weather Report for a week and recorded all of the drum tracks for the forthcoming album. However, he declined to join as a permanent member, opting instead to continue with Santana. Johnson recommended his friend Chester Thompson (a former Frank Zappa sideman), who joined as drummer in time for the next tour.