Warner has collaborated with such leading conductors as Mstislav Rostropovich, Vladimir Spivakov, Christoph Eschenbach, Andre Previn, Jesús López-Cobos, Carlos Miguel Prieto, Ignat Solzhenitsyn, Marin Alsop, Charles Dutoit, Eiji Oue, Neeme Järvi, and Michael Tilson Thomas.

Her discography includes Wendy Warner Plays Popper and Piatigorsky; Double Play: Twentieth Century Duos for Violin and Cello with Rachel Barton Pine, (both on Cedille); Hindemith’s Music for Cello & Piano for Bridge Records and Samuel Barber: Orchestral Works, Volume 2, featuring Barber’s Cello Concerto, with Marin Alsop and the Royal Scottish National Orchestra, from Naxos.

Warner’s musical studies began at age six with Nell Novak and she later studied with Rostropovich at the Curtis Institute. She made her debut with the Chicago Symphony Orchestra at age 14 and her Carnegie Hall in 1991 with Rostropovich conducting.

Warner performs on a Joseph Gagliano cello and a Carl Becker cello with a Francoix Xavier Tourte bow c. 1815 known as the "De Lamare," on loan from the Stradivari Society of Chicago.

A recipient of the Avery Fisher Career Grant, Warner is on the faculty at Roosevelt University’s Chicago College of Performing Arts, the Music Institute of Chicago and the Schwob School of Music at Columbus State University in Georgia.