as the Super Chromonica Gold. The Educator 10 is a 10-hole, 40-reed chromatic harmonica built on a plastic comb. It is designed without the valve or windsaver technology found in many other chromatics, and because of its ten holes, it is smaller than most chromatics. This makes it a simple and inexpensive chromatic, ideal both for novices and for experienced diatonic players making the transition from the smaller 10-hole harmonicas. Like the Chromonica, it plays full octaves. The Koch Chromatic and Slide Harp are both designed in the same fashion as chromatic harmonicas, but possess the Richter tuning found in typical 10-hole diatonic harmonicas. Like the Educator 10, both are also 10-hole and built on a pearwood comb. The Slide Harp has been discontinued. The 64 Chromonica is a four-full-octave harmonica in the key of C. With 64 reeds on a plastic comb, it boasts an extra octave below the middle-C note, giving it an accentuated versatility. The CX-12 is a 12-hole, 48-reed chromatic, uniquely designed with a one-piece plastic housing and a more ergonomic slide button. It is available in several keys including a tenor-C. The standard model is charcoal black in color, but a gold colored one is available in the key of C only. A variant of the CX-12, the CX-12 Jazz, has slightly different outer body features for better ergonomics, a red and gold colored housing, and higher reed offsets which aid in better tone for jazz harmonica players. The Meisterklasse chromatic is a very high-end model (7565). It is Hohner's premium 14-hole chromatic (56 notes). Like its diatonic sibling, it features an anodized aluminum comb, and chrome-plated brass cover plates and mouthpiece. The cover plates extend the length of the comb. Essentially, it looks like a bigger version of the original diatonic Meisterklasse introduced in the 1980s (but which was later revised for the MS series reed plates). Tremolo On tremolo harmonicas each channel has two reeds for each note, i.e. one pair for blown notes and another pair for drawn ones, each pair tuned slightly apart from one another to produce a tremolo sound. The most popular models are either single-sided or double-sided Echo harps, but the single-sided ones can be combined into quadruple or sextuple 'corncob' setups, with a different key on each row. Chord The Chord Harmonica consists of two harmonicas hinged together. Together, they are capable of playing 48 chords. They