ok so far i have 4 different things that work all in different pitches

1. (all low notes) g Bb c g Bb Db c g Bb c Bb g

2. (all middle) d f g d f Ab g d f g f d

3. (all middle) f g Bb f g B Bb f g Bb f g

4. (all middle except d) g Bb c g Bb Db c g Bb c Bb g

Ok?

Uh, you're confusing me. What is your question?

i think you mean (keys). all you need to play smoke on the water (or alot of rock songs) is a blues scale. for exple, a comon blues scale in Bb is Bb Db Eb E F Ab Bb. Smoke on the water just moves up in down that blues pattern