Since when did guitars have 3 strings?
bass can have 3 string
If you want to macro your songs, I found that Nexus' Supermacro does exactly that.Here's the download for it: http://lugnut.co.vu/add_ons/Client_SuperMacro.zipHere's instructions on what it does: http://forum.blockland.us/index.php?topic=215585.0
You should make more instruments like drums, bass, or even a keyboard. Make the drums and keyboard vehicles!