(Redirected from Somatoform disorder). A somatic symptom disorder, formerly known as a somatoform disorder, is a category of mental disorder included in a number of diagnostic schemes of mental illness, including the DSM-5.
Piano uses all 10 fingers, and harp only uses 8. On piano, you have to understand more theory about when to use the black keys than you do on harp, which uses levers or pedals that often donât change through an entire song. Both instruments require you to use two hands to play two sets of notes.
Lap harps have about 15-26 strings. Folk or lever harps have about 26 to 38 strings. Pedal harps can have from 40 to 47 strings. 40 strings are fine for some purposes, but in an orchestra you will probably want 46 or 47 strings. Incidentally, the 47 strings equal almost the range of the piano, minus the bottom two and top three keys, so C on the bottom to G at the top.