Hey Vibe - 2nd position Blues is meant more for low notes. @kjlarochelle did a killer map of the harmonica notes where the yellow line shows the blues scale notes. You can check it out here.
There’s a real sweet group of notes -8 -9 9 and 10" that’s real useable.
And the sweet turnaround 9 9 -9 9 -9 8 9 8 8’ 9 8’ -8 -4 -4
And there’s the major pentatonic more country blues sounding thing 6 -6 -7 -8 8 9
James Cotton plays a really cool lick that I’ve used a thousand times where he hold -8 for a really long time, and then he does a fast -8 8 -8 and slides the draws down -7 -6 and lands on 6 really fast.
So there’s some cool stuff you can do up there to not feel so “stuck” only playing low notes.
But as @slim said, you have to be able to overblow to play the minor pentonic scale. The missing note that we have on the -3’ in the lower octave, is the (6) over-blow in the top octave.
With the overblow we can play this -2 -3’ 4 -4 -5 6
Up the octave like this 6 (6) 7 -8 -9 9
I really just started successfully learning the overblow technique, which I mention in this forum post. What I did until a week and a half ago was just omit that note, and play the notes that @kjlarochelle outlines on his chart from the bottom of the harp to the top and back, approximately one bajillion times.
Does that answer your question at all? LMK, @vibe…
Rock on,
Luke