Playing In Main Frame whilistening a few tracks running in Logic Pro ...

Hello& Help > I'm using the last version of Logic and Main Stage and I would like in a patch of two keyboards that I would play, listen to several tracks running in Logic ...

I actually can listen only one, like performance 0000_Drum,

but not the others ...

I'v tried many things without success ...

Somedy would Know how to achieve this ?