Pentatonix perform spine-chilling a cappella cover of Simon and Garfunkel's classic 'The Sound of Silence'

Three-time Grammy Award-winning group Pentatonix has just dropped a powerful a cappella cover of Simon and Garfunkle's classic 'The Sound of Silence' - and it is achingly beautiful.

Putting their signature spin on the folk duo's classic 1965 hit, the quintet starts off quietly, with Scott Hoying, Mitch Grassi, Matt Sallee and Kirsten Maldonado trading lead vocals.

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The supergroup continues to build the song up, singing in perfect harmony.

And fans are thrilled with their rendition of the song, praising the group for their flawless efforts.