I also threw in a Fruity Blood as a high pass filter, making it so the higher notes would not play through the synth. The master volume and X-Y controller are linked to the X-Y controller which, I used to control how loud the music got, and i kept the second synth on the low side also. After that I used the X-Y Controller on the second synth, to control the master volume of that synth. After creating the actual song which the filter and controller would be manipulating, I used the Fruity filter on the Default synth to give it a edgier tone, and to filter out the volume control to keep the synth more on the quieter sound.
For project 4 everyone once they got there had to create a piece of music, which incorporate a filter (Fruity Filter) and a X-Y Controller.