Broadway and television star Matthew Morrison has joined the lineup for the Westport Country Playhouse’s gala fundraiser saluting 2015 Tony Award winner Kelli O’Hara.

The event, “Something Wonderful: A Gala Evening Celebrating Kelli O’Hara,” will take place Sept. 21 at the Powers Court theater. O’Hara was awarded a Tony this spring for best lead actress in a musical for her performance in the revival of “The King and I.”

Morrison played opposite O’Hara in “The Light in the Piazza,” for which they both were nominated for Tony Awards. He also portrayed Lt. Cable, while O’Hara played Nellie Forbush, in the Tony Award-winning revival of “South Pacific” at Lincoln Center Theater.

Morrison currently stars on Broadway as J.M Barrie in the musical, “Finding Neverland.” He also recently wrapped the final season of the musical comedy television series “Glee,” where he portrayed the director of the glee club, Mr. Schuester. The show received Golden Globe Awards for “Best Television Series — Comedy or Musical” in 2010 and 2011.

Proceeds from the event benefit the Westport Country Playhouse, a non-profit now in its 85th season.

A cocktail party will begin at 5:45 p.m., followed by the 7 p.m. performance. Dinner with the evening’s artists and special guests will be at 8:30 p.m. A silent auction is also planned.

The committee co-chairmen are Ania Czekaj-Farber of Westport, and Jake Robards of Greenwich. Karen Parrella of Weston is auction chairman.

Gala tickets range from $2,500 to $250. Benefactor level, at $2,500 per person, includes the cocktail party, highest priority seating at the performance, post-performance dinner with the evening’s stars and an invitation to a preview party; Patron level, at $1,000 per person, includes the cocktail party, priority seating at the performance and post-performance dinner with the evening’s stars. A limited number of Supporter tickets are available at $250 per person and include the cocktail party and the performance.

For more information or ticket purchases, contact Elizabeth Marks Juviler, director of corporate relations and special events, at 203-571-1293 or ejuviler@westportplayhouse.org.