I want to compose a song with music. But i dont know any musical instrument(except piano) and i am alone writing and composing a song. Now i want to add music to it..for ex, adding beats,guitar and some aritfical music. I have downloaded softwares like sibelius,abelton and reason 5. But i dont know how to use these softwares.I can record the song but how can i add different sounds & beats to it?? It would be very thankful if anyone teaches me how to use these softwares. Thanks in advance.