Thanks for the positive input.
Well, I'm going to need a good deal of help with this, mostly because I lack a lot of technical musical skill, like reading music. I found sheet music for the piano for the main Mario theme and managed to barely turn it into dumbed down note-by-note stuff. So, I ended up with E E E C E G A and so on, which I then put into harmonica tab, so you end up with 6 6 6 5 6 7 4 and so on. If you want to play the very beginning of Mario with your harmonica, there you go. =P
Then, I put that into the 1st position draw, which is I think called transposing? I play everything on the left side of the harmonica instead of towards the right, basically. So, the notes themselves aren't the actual Mario theme notes anymore but I'm still playing basically the same way I played on the right side, except I'm drawing air in to bend the notes and it's on the left.
Diatonic harmonicas are made to play only natural notes, by the way. On the not so blue, this is why some of the notes sound a little bent or distorted: they're either flats or sharps. On the blues version, all the notes are bent a lot and without any musical reason, thus attaining 'blues', I guess.
I think it would help a lot if I actually had the notes to the Mario overworld theme, the Underground theme, and the Underwater theme. As of right now, I'm playing by ear, and doing so rather horribly, I'd say. >_o;