I was recently visiting at our Microsoft partner Stimulant. These guys have been working with Surface for a while now, and bring a San Francisco to the mix. The first demo I have is of Tone Grid. Josh says it's a music sequencer inspired by games like Electroplankton for the DS and the fun sequencer TENORI-ON. In a future post, I'll have more video from my trip to Stimulant, including a talk I had with the team about the natural user interface of Surface. Video after the break.