Favorite lesser-known brony artist or group?

For me it's Midwives of Discord. It's like a combination of rock and techno with occasional rap that I think works pretty well.
Some of my favorite tracks:
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I tried to listen to those tracks, but the rap really killed it for me. I just can't listen to it for very long. Everything seemed of good quality though.

As for my own favorite lesser-known artists, I'm not really sure who would count as lesser known so I'll just toss up a few.
First up is Markarian for his awesome tyrant Celestia in Monument ( [You must be registered and logged in to see this link.] ).
Next would be BluNoseReindeer for fun and well done pony-related parodys and covers. [You must be registered and logged in to see this link.]
Then matthewmosiermusic for awesome songs like ( [You must be registered and logged in to see this link.] ) and ( [You must be registered and logged in to see this link.] )
Finally, my favorite would have to be JoaftheLoaf. He does really great vocal, primarily acoustic-based tracks that generally have a some emotional weight to them.
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Varia gets >2000 views per video but hes not even bad