When singer Claudja Barry left in early 1976, Barrett suggested a fellow Jamaican, Liz Mitchell, as replacement.

After an appearance on the German television programme Musikladen in September, the group was in the charts all over Europe, and a series of hit singles and albums followed over the next decade.

Frank Farian (and, from 1982–85, Reggie Tsiboe) provided male vocals that dancer and live on tour singer Bobby Farrell mimed on tv.

She sang lead vocal on "Belfast", a song she had performed live in her solo years, which became the second single from the second album Love for Sale; it was a German no.

Farian reminded her she was still contractually committed to Boney M. On their seventh album Ten Thousand Lightyears she is only occasionally heard on backing vocals.

It included a cover of "Hey Joe", a new version of "Belfast", as well as original recordings written by her and her husband Marcus.

In addition, a cover of Fleetwood Mac's instrumental "Albatross", for which Barrett had been allowed to add her own lyrics by its composer Peter Green, and the song "Rip It Up" were also part of the track listing.

[3] She also toured with her own version of Boney M. She attended with Liz Mitchell and Frank Farian at the London and Berlin premières of the Daddy Cool musical.

[3] Barrett is currently living in Berlin with her husband Marcus James (married in 1984) who was a guitarist in the band of Eddy Grant.

A German edition of her biography was also published with the title Immer weiter: Mein Leben mit und ohne Boney M.