Bach, Beatboxed

What happens when you get a teenage piano whiz and the 24-year-old, multi-talented winner of NBC's The Sing-Off in a rehearsal room together? Beatboxed Bach, that's what — courtesy of our friends over at From the Top, who got 15-year-old pianist Kader Qian and the 23-year-old cellist/vocalist/YouTube star Kevin Olusola together for their own riff on the Goldberg Variations.

The two are both FtT alums — and just in case you're wondering just how many instruments and different musical streams Olusola has mastered, he appeared on the show as a saxophonist five years ago, before winning Sing-Off with the vocal group Pentatonix last year.

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