Because their manager Robert Stigwood had ended his U.S.
distribution arrangement with Atlantic Records, Atlantic producer Arif Mardin,
who had produced the Bee Gees' prior two albums, was no longer permitted to
work with the group. In an effort to retain the same sound, the Bee Gees
recorded at the same studios (Criteria Studios in Miami), used the same
engineer (Karl Richardson) and co-produced the album themselves with Richardson
and his friend, session musician Albhy Galuten. –wiki