I am making a backing track that uses the Celtic Waltz solo guitar and moves to a celtic jig. When I get to the jig the style changes but the RealTracks instruments are not. It plays the right rhythm but on standard drum etc. When I try to load the right instruments it gives me a message that it has to be loaded on the beginning of the "song". When I do that it plays those instruments over the top of the solo guitar .... need some advice.... V