No treble here! Meghan Trainor rocks out during a Feb. 2020 performance at The Tonight Show Starring Jimmy Fallon.
Wild child Adam Lambert rocked out down under with Queen at the Fire Fight Australia at ANZ Stadium in Feb. 2020.
Ester Dean performs at 20th Century Fox's CinemaCon event at The Colosseum at Caesars Palace in March 2014 in Las Vegas, Nevada.
Red hot! Meghan Trainor performs onstage at The American Heart Association's Go Red for Women Red Dress Collection 2020 at the Hammerstein Ballroom in Feb. 2020.
Adam Lambert treated fans to a rock concert at the Global Citizen Live Sept. 2021 event in L.A.
Meghan Trainor took the stage at NBC's TODAY at Rockefeller Plaza in Sept. 2019 to party with an eager crowd.
Ester Dean joined Machine Gun Kelly in July 2012 for a performance on Leno.
Singer-songwriter Meghan Trainor kicked off the Wawa Welcome America July 4th Concert at Benjamin Franklin Parkway in July 2019 in Philadelphia, Pennsylvania.
American Idol alum Adam Lambert performed during the OUTLOUD: Raising Voices concert series at Los Angeles Memorial Coliseum in June 2021.
A former Bella member in Pitch Perfect, Ester Dean performed to honor the film's release in 2014.
Meghan Trainor let loose at L.A.'s Pride Parade in June 2019.
Adam Lambert joined Queen at ANZ Stadium in Feb. 2020 in Sydney, Australia.
Ester Dean showed that her tone is Pitch Perfect during a 2014 performance in Las Vegas.
Adam Lambert lights up the stage during his Velvet tour at El Rey Theatre in Dec. 2019.
Ester Dean brought it all during a 2014 performance.