 As most diatonic accordions are centered on certain keys, the Schwyzerörgeli is usually tuned in 'flat' keys to fit with the clarinet, with the outer row giving a B scale, the next row E, and the next giving a mixture of notes allowing music to be played in A, D and G when fingered across the rows.Of course this means each key has a different fingering.This instrument is labelled a 'B-Örgeli' or 'B/Es' (B/E).