"Teen Wolf" actor Ian Bohen was one of this year's celebrity judges.
"Jane the Virgin" actor Brett Dier, one of this year's celebrity judges, took off his pants mimicking Company's opening production number.
"Ravenswood" actress Haley Lu Richardson was one of this year's celebrity judges.
"The Mindy Project" actor Beth Grant was one of this year's celebrity judges.
"The Real O'Neals" actor Noah Galvin was one of this year's celebrity judges.
UCLA and Company alumna Nasim Pedrad was one of this year's celebrity judges. Pedrad was a former "Saturday Night Live" cast member.
"Parks and Recreation" actor Jim O'Heir was one this year's celebrity judges.
UCLA Affiliates Award for Best Production Entry goes to HOOLIGAN.
HOOLIGAN's performance featured "Star Wars" motifs like light sabers.
HOOLIGAN performed a skit inspired by the USC and UCLA rivalry and "Star Wars."
HOOLIGAN was a contestant at this year's Spring Sing.
Graduate student Lydia Luce performed "Love You True."
One of the night's solo acts was second-year student Griffith Clawson.
Resonance A Cappella performed at this year's Spring Sing.
Third-year psychology student Taylor Broom, known on stage as Temme Scott, performed an original song.
Third-year sociology student Laura Savage performed her song "Once."
Dance group Nashaa performed a Bollywood-inspired number.
Lashon Halley of Signature A Cappella performed a mix of music by Rihanna and Selena Gomez.
ScatterTones won the UCLA Prytanean Alumnae Award for best a cappella entry.
Members of ScatterTones wore Hawaiian shirts during their performance.
A cappella group ScatterTones performed at this year's Spring Sing.
Common Souls performed at this year's Spring Sing.
Dance group ACA Hip Hop won the Bruin Choice Award, voted by audience members at the end of the show.
The Who guitarist Pete Townshend accepted the 2016 George and Ira Gershwin Award for Lifetime Musical Achievement.
Roger Daltrey of The Who accepted the 2016 George and Ira Gershwin Award for Lifetime Musical Achievement.
Company performed a skit featuring an imaginary 50-year reunion of the Class of 2016.
Comedy group Company performed skits in between acts.
The AM performed at this year's Spring Sing.
Company closed the show with a skit.
ScatterTones closed Spring Sing with Lionel Richie's "All Night Long."
Savage won the Northern California Alumni Grand Sweepstakes Award for her song "Once."