It's time for Rarity to take the lead vocals this fortnight. Here is the acapella rendition of Rolling in the Deep done by 6 voices.

Applejack - Alto 2 (Lowest part)
*Percussion
Twilight Sparkle - Alto 1 (Second Lowest Part)
*Bass Line
Rainbow Dash - Soprano 2 B (Third Lowest Part)
*Harmony Line
Pinkie Pie - Soprano 2 A (Third Highest Part)
*Backing Vocals 1
Rarity - Soprano 1 B (Second Highest Part)
*Lead Vocals
And Fluttershy - Soprano 1 A (Highest Part)
*Backing Vocals 2