Leslie has worked professionally since the early '70s in jazz, cabaret, opera, classical concert and avant garde venues as an improvising pianist, composer/arranger, vocal performance artist, operatic soprano and symphonic french horn player. A part of the metro-Denver scene since 1993, she resides in the Boulder area.
As a pianist and composer, Leslie combines post-bop, avant garde and free jazz elements with impressionist, serialist, minimalist and aleatoric classical musical vocabulary. Amongst her formative influences were Messaien, Schoenberg, Alban Berg, Cecil Taylor, Paul Bley, Keith Jarrett, Corea's early freer works, Braxton, Martial Solal, Jaki Byard, AACM and Art Ensemble.
As a soprano, in addition to performances of 19th Century and later classical and opera repertoire, Leslie has been privileged to perform with and for many contemporary composers on performances of their works, including Steve Reich, Iannis Xenakis, Morgan Powell, Sal Martirano, Ralph Shapey, Zack Browning, Robert Fleischman, Jackson MacLow and Anne Tardos. In 1994, Leslie performed Anne Tardos' photo-poetry collage in 5 languages, Cat Licked the Garlic, for speaker/singer with multimedia projections, at the Beat Poetry Conference sponsored by Naropa Institute.