Since we know Matt Uelmen most likely might not be returning for Diablo III, being so busy with Torchlight, perhaps a certain Guezoum Youssef could help out!
My DiabloWiki accomplice (and Diablo-3.eu webmaster) Bob_ROss tipped me about this Diablo-inspired music by Youssef. The piece is named “Church of Diablo” and is using Tristram concept art to accompany the tunes.
Bob_ROss speculated it could be actual work for Blizzard, but while I’m impressed, I don’t think it is. If nothing else, then because Blizzard now has a habit of hiring orchestras, and this piece of music is done by one man and his digital synthesiser. Regardless, it’s really epic and well worth a few minutes to listen through.
If you’re interested in Guezoum Youssef, he’s a Maroccan musician, with a website, and a YouTube profile you can check out.