We asked the BuzzFeed Community to tell us the tricks and lies their favorite actors pulled on them. Here are the musical dupes you probably fell for, along with some that are actually real.
Not all submissions are from Community users.
1.Didn't sing: Even though Jamie Foxx won a Grammy (and has nine total nominations), he wasn't actually the one singing when he played Ray Charles in the Ray biopic.
2.Did sing: Renée Zellweger provided the actual (and almost all ~live~!) vocals while playing the iconic Judy Garland in the biopic Judy.
3.Didn't sing: Zac Efron's singing voice wasn't really used in High School Musical. The vocals for Troy Bolton were mostly provided by Drew Seeley.
4.Did sing: Even though Zac Efron's voice wasn't really used in the first High School Musical movie, it was used in the sequels.
5.Didn't sing: Even though Jennifer Lopez had to sing in her audition for Selena, they didn't end up using her real voice in the movie.
6.Did sing: Reese Witherspoon played the real-life June Carter Cash in her Oscar-winning performance in Walk the Line, and she even sang everything herself.
7.Didn't sing: Even though Hilary Duff played both Lizzie and Isabella in The Lizzie McGuire Movie, her sister, Haylie Duff, was actually the one who sang Isabella's part for "What Dreams Are Made Of."
8.Did sing: However, Hilary Duff did, of course, sing the iconic Lizzie McGuire part for the movie. After all, Duff is an international pop star in her own right, releasing five studio albums and selling over 15 million records worldwide.
9.Didn't sing: Even though Wendy Makkena (Sister Mary Robert) had to sing during her Sister Act audition, she ended up lip-synching all of her character's vocals for the movies.
10.Did sing: Kathy Najimy actually provided her character's operatic singing voice in the Sister Act movies.
11.Didn't sing: Rami Malek won the Best Actor Oscar for Bohemian Rhapsody, but his "singing" in the movie was mostly just old tapes of Freddie Mercury and vocals from Marc Martel.
12.Did sing: On top of directing, producing, co-writing, and starring in A Star Is Born, Bradley Cooper provided the actual singing voice for Jackson Maine too.
13.Didn't sing: Even though Marion Cotillard took singing lessons for her role as Édith Piaf in La Vie en Rose, she lip-synched in the movie.
14.Did sing: Tom Hiddleston played Grammy-winner Hank Williams in I Saw the Light and even sang several of his songs for the movie.
15.Didn't sing: BD Wong provided Li Shang's speaking voice in Mulan, but Donny Osmond was the one who sang the iconic "I'll Make a Man Out of You" number.
16.Did sing: Heath Ledger really sang that iconic "Can't Take My Eyes Off You" cover while running on the bleachers in 10 Things I Hate About You.
17.Didn't sing: The producers and directors of O Brother, Where Art Thou? heard George Clooney record one song for the movie and immediately realized they needed to hire someone else to provide the vocals.
18.Did sing: Taron Egerton sang every single note while portraying Elton John in the Rocketman biopic.
19.Didn't sing: Christopher Plummer only sang tiiiiiiny bits of each song in The Sound of Music, and they dubbed most of his singing with the voice of Bill Lee.
20.Did sing: Oscar Isaac was in several bands growing up, and that was actually him singing in the Coen brothers' Inside Llewyn Davis.
21.Didn't sing: Even though Matthew Broderick recorded two songs as Simba in The Lion King, the vocals were ultimately provided by Joseph Williams, the lead singer of Toto.
22.Did sing: Carey Mulligan actually sang live during her beautiful and haunting cover of "New York, New York" in the movie Shame.
23.Didn't sing: Rebecca Ferguson didn't actually sing "Never Enough" in The Greatest Showman. Instead, she lip-synched to vocals from Loren Allred.
24.Did sing: Eddie Murphy sang every single note as Jimmy Early in his should-be Oscar-winning role in Dreamgirls.
25.And didn't sing: Jonathan Taylor Thomas provided the speaking voice for Young Simba in The Lion King, but Jason Weaver provided the singing voice (and he turned down $2 million so he could negotiate a royalty deal with Disney).
Did your favorite musical performance not make the list? Tell us about it in the comments below!