Anne Ford it was considered controversial for a woman to play the "masculine" viola da gamba, referred to at the time as the "viol di gambo". Ford gave a performance at Spring Gardens in 1761, "English airs". accompanying herself on the musical glasses. She also wrote a published work, "Instructions for Playing on the Musical Glasses". The instrument was comparable to the glass harp of Richard Pockrich consisting of individual glass goblets tuned with water, and preceded the 1761 mechanized armonica (Glass harmonica) invention of Benjamin Franklin and played by Marianne Davies. Ford's accomplishments risked being complicated by an infatuated lover, the
Richter-tuned harmonica of the "Steve Baker Special" in the key of C: They come in five keys: This harmonica opens up lots of interesting possibilities, especially for blues harmonica, like extended tongue-block octave playing, the possibility to play exactly the same 2nd position riffs in two octaves, etc. Two harmonica models have been released with altered designs that allow for increased bending abilities, and in effect, chromatic playing on a diatonic harmonica. They are often referred to as "extra-reed" harmonicas, because they carry more than the usual 20 reeds of a diatonic harp. The Hohner XB-40, invented by Rick Epping, features an