Assertion: concertina's key | /r/AtLocation | that side of the instrument
Facets:
Source sentences:
text: In the consideration of those qualities which make the study of Music so easy I must not forget to mention that there are two extra notes in the scale greatly facilitating accompaniment in different keys, and it is also worthy of notice that throughout the whole scale of the Concertina, the keys corresponding to notes placed on the lines of the musical staff are on that side of the instrument touched by the left hand, and of a consequence the notes occuring in the spaces are all played by the right hand.