Purevolume.
O.M.G. (I'm a teenage girl, I have a right to say that) This site is the perfect combination of signed and undiscovered bands. You can create a playlist of your favorited songs. Reliable tour information, commenting, and streaming songs are all available on each band's individual page.If I haven't sold yet, occasionally a band will put up a downloadable demo. The only thing better than music is free (and legal) music!
YouTube.
Uh yeah. I'm pretty positive that you've heard of this one. But do you use every feature to the max? Quicklists, Playlists, and Favoriting - all brilliant. Note: If you don't have an account GET ONE NOW. But music videos, and not just the official ones, but interesting ones like Daft Punk's Harder Better Faster Stronger with hands (just look it up if you haven't already) and cool photo slideshows that must've taken hours of rifling through Photobucket. There's some undiscovered singer-songwriters looking to make it big and some horrible cover artists, variety.
LetsSingIt.
The best lyric search engine out there, though not perfect by any means. Search by artist, album, song title, or lyric and you're guaranteed to find any popular lyrics. I personally listen to some obscure stuff and it won't always be on LetsSingIt, but when it is, the lyrics tend to be the most correct. And it definitely satisfies me, the grammar queen to find very few (none that I recall) misspellings!
Last.fm. This site offers more than the typical information on bands (bio, loads of pictures, news, events) because it comes along with the handy "Similar Artists" feature. That's right, type in your favorite band and they'll give you a list of potential new favorite bands. Plus, people tag the bands with the appropriate genres, which can really help if you're clueless.
