Assertion: bagpipe's drone | /r/CapableOf | comprise of two tenor drones
Facets:
Source sentences:
text: These have three drones (the drones are what make the low, sustained pitches which sound constantly and continuously), comprised of two tenor drones and a bass drone, and a double-reed chanter with a 9-note scale in the mode of A mixolydian (the notes of the chanter scale are G-A-B-C#-D-E-F#-G-A).