London's Capital Children’s Choir has been singing since 2001, growing from four 10-year-old girls to 120 kids between 7 and 18. They've since performed for the Pope and the Queen, sung onstage with the reunited Spice Girls and punk-rockers Anti-Flag and even record at Abbey Road.

But perhaps their neatest trick is their latest choral cover of the seemingly impossible to cover a capella Crystal Castles, emulating the synths and drum machines of "Untrust Us" with only their voices and hands. We've also included the original Crystal Castles version with an unofficial (but officially awesome) fan-made music video right below.

But don't forget to scroll through the whole slideshow, which includes the Capital Children’s Choir brilliant takes on Florence and the Machine, Stevie Wonder, Bjork, Lady Gaga, Coldplay, Spiritualized and even Guns'n'Roses. (Damn straight they covered "Sweet Child O' Mine.")

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  • "Untrust Us" Crystal Castles covered by Capital Children's Choir

  • Shake It Out: Choral Tribute to Florence and The Machine by the Capital Children's Choir

  • So Long You Pretty Thing: Tribute to Spiritualized by Capital Children's Choir

  • Who Is It: Choral tribute to Björk by the Capital Children's Choir

  • Judas: Choral tribute to Lady Gaga by the Capital Children's Choir

  • Sweet Child O'Mine: Choral tribute to Guns n'Roses by the Capital Children's Choir

  • Goodbye Yellow Brick Road: Choral tribute to Elton John by the Capital Children's Choir

  • Chinese: Choral Tribute to Lily Allen by Capital Children's Choir

  • Capital Children's Choir sing Coldplay "Viva La Vida" at Westfield

  • For Once In My Life: Tribute to Stevie Wonder by the Capital Children's Choir