When would you consider as the beginning of rock and roll?
Are you asking what year or which groups started rock and roll?
When rock and roll, the music style began in the 20th century
1950 in America
Some people interestingly argue that Blues around end of the 19th century was rock and roll
well rock and roll was part: Blues, Jazz, and gospel
Music of the United States
The music of the United States reflects the country's pluri-ethnic population through a diverse array of styles. It is a mixture of music influenced by West African, Irish, Scottish and mainland European cultures among others. The country's most internationally renowned genres are jazz, blues, country, bluegrass, rock, rhythm and blues, soul, ragtime, hip hop, barbershop, pop, experimental, techno, house, dance, Disco, Boogaloo, Reggaeton, and salsa. American music
Oldies
Oldies is a radio format that concentrates on rock and roll and pop music from the latter half of the 20th century, specifically from around the mid-1950s to the 1970s or 1980s.
In the 1980s and 1990s, "oldies" meant the 15 years from the birth of rock and roll to the beginning of the singer-songwriter era of the early 1970s, or about 1955 to 1972, although this varied and some stations chose 1950–1969.
After 2000, 1970s music was increasingly included, and early 1980s music