Extensions (The Manhattan Transfer album)
 Extensions was released by The Manhattan Transfer on October 31 1979 on the Atlantic Records label.This album began a new era for the group: This album was the first one with Cheryl Bentyne who replaced Laurel Massé. It was also the first album that contained songs that were hits in both the jazz and pop categories. The disco hit song Twilight Zone/Twilight Tone reached #12 on Billboard's Disco chart and on the Hot 100 reached #30.