Wendy Haas

Wendy Haas-Mull (born August 9, 1949) is an American vocalist and keyboardist best known for her work with the bands Santana and Azteca.

Biography Growing up in the San Francisco Bay Area, Wendy Haas began her musical career in her mid-teens, playing bass, keyboards and singing. Haas attended Woodside High School in Woodside, California. She was in a high school band in 1966 called The Freudian Slips, and by 1967 the band was playing at The Fillmore.

Haas was married to comedian/actor Martin Mull from 1982 until his death in 2024.

Haas participated in the Azteca reunion concert in Los Angeles in 2007, which was recorded and released on CD as From the Ruins (2008) and DVD as La piedra del sol (2008).