Rice Miller (AKA Sonny Boy Williamson II) did several versions of this tune, but on the classic Chess recording, he is playing a 10-hole chromatic tuned the same way as a standard 10-hole diatonic..

"Richter tuning" is the name usually given to the note arrangement of the typical 10-hole diatonic harmonica (although strictly speaking, the name "Richter" refers to the construction of the instrument, rather than the tuning itself). When chromatic harmonicas were introduced, they also used a similar layout - playing with the button out gives you the same notes as a blues harp in C; pushing the button in gives the same notes as a blues harp in C#. On his recording of "Dissatisfied", the band is in the key of G# and Sonny Boy playing a key of C 10-hole chromatic with this tuning. He is holding the slide in for most of the tune, playing it in second position like C# diatonic, although he occasionally lets the slide out and back in for ornaments.

Until the 1950s, the Hohner Chromonica 260 (a 10-hole chromatic harmonica) was available in both "Regular Tuning" (meaning the gapped tuning used on the typical diatonic harp) and "Solo Tuning" (like most current chromatics). The Koch chromatic (originally made by the Koch harmonica company who were bought out by Hohner in the 1920s, this harp is still made by Hohner under the Koch name) has always been in the Richter-style tuning and a few years back, Hohner produced the Slide Harp, a similarly tuned 10-hole chromatic with nickel-plated reedplates and partial valving.

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