Sometimes you have a very specific idea of how your song should sound like. To give us a good idea of what you want it could come in handy to send us examples.
Lets say you want the sound of “Purple Haze” from Jimi Hendrix, but you have a Hammond organ as well that needs to put down a base layer just like in “Child In Time” by Deep Purple. Then you add those two tracks in the according map so we can listen to the tracks and understand what you mean.