goal: chromatic virtuosity

[Marion.Spiers@xxxxxxxxxxxx]

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Well, sort of anyway. I want to be able to play in any key, but not buy a 
whole bunch of chromatics. What positions do you more experienced fellows 
find to lay out well for blues and LW-type-swing-phrased songs (and still 
have cool chords available)? I have a C and a Bb, and am experimenting 
beyond 1,2, and 3rd. I'm thinking I should be able to catch pretty much 
every key with maybe one more harp ( a G- cause everyone seems to wanna 
play in A minor at the jams- a G would make it simple). What's your take? 
I'd like to get to where don't even need to take a diatonic with me except 
maybe a couple like A and C for variety. Reason? I like the tone better 
with the chromatic, but don't want to sound too "square".  Any of you more 
serious chro' gents have some seasoned advice to set me on the fast track?

thanks,
kcmojo