The subversive geniuses at Hobnox have just released one of the most musical browser based synths I have ever played. Nudge enables you to step-enter 8 sounds into a looping 4/4 grid. The grid is pentatonic instead of full chromatic but there is still a surprising amount of creative flexibility. It is as fun to just throw a lot of stuff in there and then reduce it down as it is to carefully build things up one piece as a time. You can adjust volume and pan for each sound and set the master volume and tempo. Once you are pleased with your little creation send it on to your friends with the included permalink or embed the player on your site like I have below. This thing is dangerously addictive if you have a synth problem.