Here is the last Rarity lead for Season 4. It's also the 2nd 1950s suggested song for this season after Pinkie Pie's Rockin' Robin. It's Stupid Cupid originally performed by Connie Francis.

Applejack - Alto 2 (Lowest part)
*Bass Line
Twilight Sparkle - Alto 1 (Second Lowest Part)
*Percussion
Rainbow Dash - Soprano 2 B (Third Lowest Part)
*Harmony 2
Pinkie Pie - Soprano 2 A (Third Highest Part)
*Harmony 3/Percussion
Rarity - Soprano 1 B (Second Highest Part)
*Lead Vocals 
And Fluttershy - Soprano 1 A (Highest Part)
*Harmony 4

#Mane6Acapella​​
#Rarity​​
#MuseScript