Hohner 3P532 Blues Harp Pro Pack 3 Harmonicas Keys: G-A-C Until now, harmonicas just werent made for blues. For one thing, they didnt last. After two or three blues sessions it was tough even for a musician like Mel Lyman to get a good sound. The punishment of blues wailing often caused the reeds to lose pitch and flat out. Now youve got the blues harp. With a new kind of reed system. And you can get a great blues sound with a minimum of effort.