Features Hohner ‘CHROMETTA’ Series – Start your Chromatic experience:. Many people have heard the sound of the chromatic harmonica without even realizing. Its versatility makes it perfect for folk songs and pop, as well as for jazz and classical music. Hohner’s Chrometta Series offers you an affordable starting point to begin exploring this exciting musical landscape, with the right instrument for your level of ability. The four models differ only in their tonal range, running from 2 to 3.5 octaves, but share the same features otherwise.