--seed.....
If it's blues harp that strikes yer fancy - check out Jack Bruce's "Traintime" on Cream's Wheels Of Fire....a 7 plus minute harmonica jam that'll blow your socks off. John Mayall's not bad either, for blues-based, harmonica rock - if there is such a description. Also, Jimmy Reed mentioned above was noted for almost exclusive use of the three(?) "bendable" notes in his harmonica solos.
Neil