I just stumbled across this. From the outfit she's wearing in both these photos and the video of her singing , it seems to me that the video must be from the Block Party on Wisteria Lane from April 2011.

I love seeing Teri sing. She's so adorable!

Edit:

Oooh lala! I found some more!

One - This one has a sound malfunction half way through, so I suggest turning your volume down a bit.

This is the same performance as above, but from another camera and further away.
Part 1
Part 2
Part 3

I've thought she had a good voice ever since the first time she sang on "Lois and Clark." I'd like it if she made some more appearances with Band From TV. These clips of her with the band are always fun to watch. I just wish there were more clips available from the Block Party on Wisteria Lane event.

Ooh, nice. I didn't know this. Thanks!