I'm writing a song in the program 'Sibelius 5', and want to add dynamics into it (like forte, piano ect.), and I want the midi file generator playback device thingy to play them. how do I do that? I'm trying to write 'Circle of Life' for 4 trumpets, and I also want for example at one time the First trumpet to be playing Forte, whilst the others play Piano. how do I do this? I would try to figure it out myself, but my english music knowledge is non existent.