Assertion: bass clarinet's key | /r/HasProperty | five or six sharps
Facets:
Source sentences:
text: This problem was overcome by using three clarinets—in A, B♭, and C—so that early 19th-century music, which rarely strayed into the remote keys (five or six sharps or flats), could be played as follows: music in 5 to 2 sharps (B major to D major concert pitch) on A clarinet