Karl Wilhelm Jacob Haas (27 December 1900 – 7 July 1970) was a German musician, musicologist and conductor.
According to Lionel Salter, when Haas founded the London Baroque Ensemble in 1941 he incorporated 'Baroque' into the name "with his impish sense of humour", and an acknowledgment that the term can also mean 'bizarre'.
They have accompanied keyboardists Lionel Salter, Charles Spinks and George Malcolm in works of J. S. Bach and C. P. E.
[4] They made a number of recordings of Handel, Bach, Boyce, Mozart and Dvorak, some produced by George Martin.
[7][3] Other recordings of the London Baroque Ensemble were made on the Westminster label, now part of Deutsche Grammophon, Parlophone, Decca and Pye.