Assertion: folk music's rhythm | /r/CapableOf | reach its peak
Facets:
value: with the song
type: OTHER
value: in the late 1950s
type: TEMPORAL
value: in popularity
type: OTHER
Source sentences:
text: Western music, influenced by the cowboy ballads, New Mexico, Texas country and Tejano music rhythms of the Southwestern United States and Northern Mexico, reached its peak in popularity in the late 1950s, most notably with the song "El Paso", first recorded by Marty Robbins in September 1959.