German drummer Klaus Weiss appeared in groups with many American expatriates as well as leading his own bands in trio, quintet, sextet, and big-band settings from the '60s through the '90s. Influenced by such drummers as Big Sid Catlett and Buddy Rich, Weiss began playing professionally at age 16. His first gigs, with a group called the Jazzopators, provided accompaniment roles for trumpeter Nelson Williams and vocalist Inez Cavanaugh. Weiss also worked with the Klaus Doldinger Quartet, and played at the Blue Note in Paris with Bud Powell, Kenny Drew, and Johnny Griffin. He led a trio beginning in 1965, with pianist Rob Franken and bassist Rob Langereis, that played with Booker Ervin, recorded his first LP as a leader (Greensleeves), and won the International Jazz Competition in Vienna in 1966, and would go on to win several Twen Jazz Polls as well. During the late '60s, he also played with the Erwin Lehn Big Band, the Bayerischer Rundfunk Jazz Ensemble, and Friedrich Gulda.