"Bending notes is a tough technique for beginner harmonica players

and it is where the secret to getting a "bluesy sound" lies,

 because it's the way to get the flat third, fifth and seventh; the blue notes"

The History Of The Blues Harmonica

Harmonica History

Harmonica History - From China to the Blues

Mo Al Jaz

Route 66 Harmonica Club

About the harmonica and where it came from

 

 

Terry “Harmonica” Bean at Old York Blues and BBQ Festival 

James Cotton - Slow Blues (Angel Of Mercy / Blues in my sleep 

James Cotton Blues Band - Jazzwoche Burghausen 1987 fragm

James Cotton - The Creeper

James Cotton - Saint On Sunday

 Little Walter  -  Little Walter's Jump

Amazing Grace on Harmonica - Howard Levy