Blues harp players don't care nothin 'bout no modes, man....

Actually, I don't know how it breaks down mode-wise, but here's a little harmonica 101 which you may already know:
A blues harmonica player chooses a harmonica key a fourth from the key of the song. To play the blues in G, you use a C harmonica. The "blowing" notes in a ten hole C harp are from the bottom up:
C E G C E G C E G C
The "draw" notes in the same ten holes are:
D G B D F A B D F A
(How this was determined, I have no idea...)
You can easily scoop the draw notes in the lower and middle register and get a 1/2 step bend (lower), which gives a lot of possibilities.
A pentatonic scale (1,3,5,6,b7) can be played thusly:
3(out) 3(in) 4(in) 5(out) 5(in). This pentatonic scale forms the basis for a lot of blues licks and their variations.
Toots Thielman plays a chromatic harmonica with more available notes, but I still have no idea how he makes it all work...

<FONT SIZE=1 COLOR="#8e236b"><p align=CENTER>[This message was edited by Jerry Gleason on 05 November 2000 at 12:29 AM.]</p></FONT>