To make up for not having a M6A last Sunday, here it is on Friday instead! You should know by now I'm a PinkieDash shipper. I've done a couple of covers with these 2. Yep!

Applejack - Alto 2 (Lowest part)
*Bass line
Twilight Sparkle - Alto 1 (Second Lowest Part)
*Percussion
Rainbow Dash - Soprano 2 B (Third Lowest Part)
*Lead Vocals (Sam's part)
Pinkie Pie - Soprano 2 A (Third Highest Part)
*Lead Vocals (Christina's part)
Rarity - Soprano 1 B (Second Highest Part)
*Ahhhs
And Fluttershy - Soprano 1 A (Highest Part)
*Ahhs and instrumental melodies (Which are hard to sing IRL)