You would need a guitar equipped with a MIDI pickup, and a MIDI interface that would connect to the Solton. This is about a $900.00 investment.Shop around. Would it change the chords in the Solton? One way would be if the chord changes were being effected by MIDI messeages. Your manual should have a MIDI Implementatio sheet at the end and give that information. Then, does the MIDI guitar/interface you get send those messeages out....Do you play guitar? Otherwise, maybe a cheapo MIDI keyboard might do the trick for about a 100 bucks. If you have any more questions, feel free to email me at rsyn707@aol.com