What are the notes on a blues harmonica?

A blues harmonica, typically tuned in the key of C, features a diatonic scale with 10 holes, each producing a specific note when drawn or blown. The notes from hole 1 to hole 10, when drawn, are D, G, B, D, F, A, C, E, G, and B, while blowing yields C, E, G, C, E, G, B, D, F, and A. Players often utilize techniques like bending to create expressive sounds, allowing them to play a wider range of notes and achieve a characteristic bluesy feel.