More than 100 performers will celebrate the career of singer-songwriter Joni Mitchell for 12 hours Saturday during "Wall to Wall Joni Mitchell" at Symphony Space.

Scheduled to appear are Laurie Anderson, Christine Lavin, Suzzy and Maggie Roche, Garland Jeffreys, Ute Lemper, Lucy Kaplansky, David Amram and the Mingus Big Band.

Mitchell, who was born in Saskatchewan, Canada, missed the original Woodstock concert in 1969 when her then-manager David Geffen persuaded her not to go because she was scheduled to appear on "The Dick Cavett Show." She later wrote the anthem "Woodstock" made famous by Crosby, Stills and Nash.

Mitchell has produced 21 albums in 30 years, including "Blue," "Court and Spark," "Both Sides Now" and "Turbulent Indigo," moving from folk music into pop, jazz, avant-garde and world music. Her songs include "Help Me," "The Circle Game" and "Both Sides Now."

Explaining why Mitchell was chosen, Limor Tomer, Symphony Space's curator of music, said, "The annual Wall to Wall event is an opportunity to explore in depth an individual artist's work and legacy. Joni Mitchell, in her restless, iconoclastic and deeply individual way, has created both a body of work as well as a musical dialect that has indelibly affected three generations of musicians and informed the work of musicians from an astonishing range of orientations."

During the past 32 years, "Wall to Wall" events have saluted the careers of Broadway composers Richard Rodgers, Frank Loesser, Irving Berlin and Kurt Weill as well as classical composer Johann Sebastian Bach and jazz great Miles Davis.

The event is free, but count on waiting in a line that can stretch a couple of blocks.

One way to skip the line is to become a Symphony Space member by today. A $50 membership gives two people priority admission to "Wall to Wall" as well as discounts on tickets. For information, call (212) 864-1414, ext. 229 or go online to www.symphonyspace.org.

"Wall to Wall Joni Mitchell" will be broadcast live on WFUV, Fordham University's public radio station, at 90.7 FM. A live audio stream is available at www.wfuv.org.