Tonight, we've been fiddling around with TweetLouder, a sweet app that scans your iTunes, Pandora, Last.fm and/or SonicLiving accounts to find your favorite bands and automagically shows you the Twitter accounts of the musicians you like best.
You can then decide which artists, if any, you'd like to follow. Cooler still, you can even see upcoming shows for some of the artists in your list, though some of those shows might not be geographically convenient, so to speak.
Sadly, there's no option to add bands to a Twitter list, either individually or en masse. Still, for a free app, it's a pretty sweet deal.
TweetLouder comes from the mutual intellectual grazing area of Twitter design researcher Mark Trammell and music/concert-focused startup SonicLiving. While the app is built on both companies' APIs, it also got a helping hand from this massive Google Docs spreadsheet of musicians on Twitter.
Here are some screenshots to give you an idea of how the app works:
