request: street corner symphony & other acapella groups music from sing-off

[fruithead]

several of the groups featured on the sing-off show have released albums, i was not able to find them anywhere, with the exception of pentatonix 2 albums. if someone could point me to those albums, i would be indescribably grateful.

the groups i am most interested in (but really anything would be awesome) are:

street corner symphony (<--- i really want these guys the most)
http://www.amazon.com/UnPractice-Perfect...r+symphony
http://www.amazon.com/Southern-Autumn-No...r+symphony

EDIT: ADDING VOICEPLAY (even though this has not yet borne fruit I HAVE FAITH AHAHAHA)
https://itunes.apple.com/us/album/collide/id796783576
https://itunes.apple.com/us/album/unstop...d526053417
https://itunes.apple.com/us/album/time-m...d525946336

home free (<--- love these guys hugely)
http://www.amazon.com/From-Top-Home-Free...=Home+Free
http://www.amazon.com/gp/product/B002A6F...-7%3C/a%3E
http://www.amazon.com/gp/product/B008OUR...-6%3C/a%3E
http://www.amazon.com/Crazy-Life-Home-Fr...=Home+Free

the backbeats
http://www.amazon.com/The-Backbeats-Sing...=backbeats

nota (season 1 winners)
http://www.amazon.com/Nota/dp/B00491JVXI...457&sr=1-1

comitted
http://www.amazon.com/Committed/dp/B005I...=committed

afro blue is now known as traces of blue, but i dont think they put out an album yet

and the following college groups:

the beelzebubs
on the rocks
yellowjackets
vocal point
dartmouth aires

MANY MANY THANKS TO ANYONE WHO HELPS ME OUT!
YOU GUYS ROCK!