Okay, does anyone know the specific rules to composing rock music. I know that there is a backbeat or downbeat. Rock is on the 2 and 4 beat as oppose to classical and folk on 1 and 3. So for example, would the tonic go on the 2 beat? and if so what should go on 1? I'm really really confused about this. So if anyone has a clue. fill me in .