Here is an example of Electromyography sensors (emg)

http://www.biometricsltd.com/analysisemg.htm

I'd like to be able to control a sequencer with muscle movements, I'd write some code to process the inputs and convert them to midi, but need to find some inexpensive emg's to use that I can read data from under Linux.

Anyone have any reconsiderations?

Thanks
Nathanael