We've packaged together the seven most commonly used harmonica keys (A, Bb, C, D, E, F, and G). Buy them together and save! Curved cover plates extend the entire length of the harmonica, providing increased resonant capacity. Reeds are set close to the open-framed mouthpiece and respond to the most subtle of commands, making the Golden Melody perfect for overblowing as well as bending. Specifications: 10 Single Holes, 20 reeds, plastic comb, equal temperament, Length: 4 1/8 inches.