He co-wrote many songs with James Last and drummer/percussionist Barry Reeves (born Barry Roy Reeves, 1944, Birmingham, Warwickshire, died 6 February 2010), who was also a Last band member. One of the Last/Bendorff/Reeeves compositions, Manja, was released as a Bendorff solo single in 1971. Bendorff was often featured as a vocal soloist for both recordings and concerts by Last, usually singing Paul McCartney songs like "Live And Let Die", "Mull Of Kintyre" and "Silly Love Songs".
He collaborated with James Last and drummer Barry Reeves on many musical compositions, with Reeves also being part of the Last band. One of their joint creations, Manja, was released as a solo single by Bendorff in 1971. Bendorff frequently showcased his vocal talents as a soloist for both recordings and live performances by Last, typically singing songs by Paul McCartney such as "Live And Let Die", "Mull Of Kintyre" and "Silly Love Songs".