WELL, here it is. a REDONE version of my previous atrocity. XD
After the first time I did the song, I got a LOT of AWESOME feedback and criticisms from all y'all, so I went ahead and DID IT AGAIN!
This time with a LOT MORE goodness. I did more harmonizing, I didn't FAIL the key change at the end, I did my best to change the background ponies to say sisters instead of brothers... and above all, I really think I improved myself being able to sing as two different ponies.

if you HAVEN'T seen my old version... You don't really need to bother... but yeah. those are all the things I tried to fix with this. ^^/

Karaoke from here: http://www.youtube.com/watch?v=7hdb9af9s2Q

art from here: http://mlpgenderswap.deviantart.com/gallery/32517989#/d4p0f8n