I have a zoom guitar fx pedal which has midi in and out as well as USB. I use the usb connections for guitar but i also have to record keys/vocals. Would it be possible to put keys>midi in>usb>computer>midi out? It would help me short term before buying an interface.
I don't think the midi signal is a sound signal. It is digital command signal telling equipment what to do. You can record all through the pedal one-at-a-time.