The Living Tombstone (Youtube)
Wooden Toaster/Glaze (Youtube)
Mic the Microphone (Youtube)
I Bring Da LULZ (Youtube)
TwentyTen is something of a dream team for the brony music community: four great artists, all in one group. They have all worked together in the past (see September, Beyond Her Tomb, Love Me Cheerilee, etc), but officially created this group back in September. With a stunning grand total of one track to their name so far (the incredibly polished Obsolete), we're all looking for what they have in store next.
Notable example: Rudebrat (Feat. TwentyTen) - Obsolete