Assertion: rock band | /r/CapableOf | modify roll
Facets:
value: by adding harder sounds
type: MANNER
value: in the 1960s
type: TEMPORAL
Source sentences:
text: In the 1960s, American, Dutch and British blues and rock bands began to modify rock and roll by adding harder sounds, heavier guitar riffs, bombastic drumming, and louder vocals, from electric blues.
text: In the 1960s, American, Dutch and British blues and rock bands began to modify rock and roll by adding harder sounds, heavier guitar riffs, bombastic drumming, and louder vocals, from electric blues.