We all know that the 2 new K-ON!! OP are next to impossible to sing.  Well, Toyosaki
Aki did sing these 2 songs live (TV size) in the recent TBS Anime Festa 2010 on 8/7.


If you have NicoNico account : 
Go!Go!Maniac
http://www.nicovideo.jp/watch/sm11770611
Utauyo!!Miracle 
http://www.nicovideo.jp/watch/sm11762015

If you do not have NicoNico account : 
Go!Go!Maniac
http://www.youtube.com/watch?v=e_v66rxvyms
Utauyo!!Miracle 
http://www.youtube.com/watch?v=_NCRfTa1kNE

In both cases you can disregard the content of the video.  Hikasa Youko also sang
Listen! and No, Thank You!, but I cannot find any clip on them.

--
'CuSO4' Yung