I have a Yamaha P120S that I want to use as a midi controller for my software synth. This keyboard doesn't have any midi control such as assignable knobs, pitch bend and mod wheel, so I want to get an Oxygen8 to add to this to complete the midi contolling capabilities. How would I hook the two up together so that both the keys from the P120s and the midi controlls from the oxygen8 will operate the synth software/sequencer. Midi Thru, Midi out/in? I'm really inexperienced at midi stuff.