Hmm, I guess I could post a few... Two songs from each artist maybe.
Shingo DJ - not really a dedicated Touhou artist, but he does have two Touhou albums (Touhou Invasion and Gensokyo Style). He has the first of those two albums available for free on his blog. Also, a song from each:
Obligatory
Bad AppleVoyage 2009 (because 1969 is an amazing track by default)
dBu - no explanation needed, everyone knows about dBu. Still, I really like how they stay close to the originals
How to catch a Drake.Be of good cheer!COOL&CREATE - Again, who hasn't heard of them? They're one of the few vocal arrangers I actually like though. Especially Beatmario's singing. I may have to post more than two here :V
PAAAAAAAAATCHOUUUULEEEEEEEEELEELELELELELELEEndless Dream (English sub uploader closed his account D=)
PROGEAR NO ARASHI from ケイブラブ. Yeah, yeah, I know, this is a Touhou thread... (but Cave album = +100 respects.)
t+pazolite (CHS) - o gawd i luv dese guise. More speedcore, don't mind me! Again, not entirely Touhou, but I'd say they're probably at least 75% Touhou.
Shiki from the Unlimited Spark album (great disk man).
Lunatic Princess from Neetmania. Maybe this is why I always call her KagKag now...
DJ Technetium - Sorta similar to above I guess. They have a lot of duplicate tracks with minor variations though, which is kind of annoying.
Another
Voyage 1969 from the album 東方ハードコア
Cosmic Mind, another one of those "awesome by default" songs.
Random song dumping, no particular artists:
More Cosmic MindJIMANG!! I don't even like these songs, but they exude awesomeness somehow.
How to catch a Donut.
How to catch a Chirpy.