This is a very basic example of an effect that has immense potential: Using a sequencer to turn individual strings of an instrument on and off, while sustaining/holding a chord. This produces a uniquely organic sounding arpeggio effect where the strings of the guitar are treated to the same sort of amplitude envelope treatment that an oscillator on a synth would. This essentially turns each string of the guitar into an oscillator in a six voice synth.
Here I'm using the BASTL sequencer to create 6 separate trigger signals for the HEXa(s)r envelope generator which then sends 6 separate envelopes to the Level CV of the SynQuaNon Hex VCA.