BIG SIX Blues CLASSIC Harmonica. The BIG SIX is a real must-have. It is a six-hole (12 note) harmonica that plays and sounds fantastic. It is a really eye-catching design with great playing features: Great sound because of stainless steel reeds also used in Seydel's top-model, the 1847! With mounting for the provided lanyard. Packed into a tin-can that serves as package and also as a resonator for many sound effects! Sealed wooden comb. The BIG SIX Blues is a standard diatonic harp in the key of C (holes 1-6 =12 tones) and is therefore suited best for playing in the second position.