The Omaha Symphony ends its 2010-2011 season on a big note with its performance of Gustav Mahler’s Seventh Symphony. The ambitious production, spanning 75 minutes, features nearly 100 musicians and some uncommon additions including a tenor horn, mandolin and cowbells.

Mahler’s eccentric piece will be performed by the Omaha Symphony in two finale performances — 8 p.m. both Friday and Saturday — at the Holland Performing Arts Center, 1200 Douglas St.

Thomas Wilkins, the finale conductor and Omaha Symphony director since 2005, said Mahler’s Seventh is one of the most difficult pieces the orchestra will have performed all season long, and is what he feels a fitting end to the Symphony’s 90th anniversary.

“Mahler’s Seventh uses the full force of the orchestra,” Wilkins said. “It grabs the soul as well as the ear.”

In addition, the symphony will also perform Prokofiev’s March in B-flat Major and Vaughan Williams’ Fantasia on a Theme by Thomas Tallis.