The Hohner Meisterklasse chromatic harmonica is one of the best harmonicas in Hohner's MS (Modular System) series. It is meant to be played only by professional musicians who want to create their own unique sounds. The Meisterklasse has a range of 3.5 octaves. It features 56 reeds and extremely airtight construction, which makes it easy to play. However, the thing that makes it an absolute must for any musician's instrument collection is that it is easy to clean, adjust, and tune any way you want to. Just remove the screws and play with the reed spacing as much or as little as you want.