I recently came across a bunch of music by a group called DDBY. I really like some of it. Apparently the full songs are aggressively taken down when posted on Youtube, but there are official samplers. This one is from a nice album called RelaxTime 2:
Oh, wait. Here is a video that includes eight full albums from one of their series called Cafe de Touhou (which is a good series):
I like some of their cover art, such as the art for Synth de Touhou 1:
I think I found the Twitter account of the artist for this one, but there is not a lot of art posted on the account.
Edit: I was just too Twitter-ignorant to notice until just now that there is a Media tab. There is a lot of art posted on the account.