Back in 2012, Rob Cantor wrote and shared a song called "Shia LaBeouf" on SoundCloud [1] that went viral, and now he's starring in a very elaborate live performance of the song, which features masks, vocals by the Gay Men's Chorus of Los Angeles, and one can't-miss cameo. You may recognize Rob as the guy behind those 29 celebrity impressions [2] from a few months back, as the singer-songwriter is no stranger to the viral-video game. In this case, for the live "Shia LaBeouf" performance, Rob enlisted the help of the Gay Men's Chorus of Los Angeles, the West Los Angeles Children's Choir, and the Argus Quartet. Watch the full video above, then check out Shia LaBeouf's recent candid interview [3] and his buzzed-about appearance on Jimmy Kimmel Live [4].