Ladislav "Ladi" Geisler (27 November, 1927 – 19 November, 2011) was a Czech musician who established a high profile in the post-war German music scene. Best known for his work with German pop musicians Bert Kaempfert, James Last and Freddy Quinn, Geisler developed the distinctive “Knack-Bass” percussive bass sound that helped popularize the Bert Kaempfert Orchestra. He later released numerous records under his own name.
