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
I love that about American music,  a great mix of music influenced by West African, Irish, Scottish and mainland European among others. A kind of melting pot
American music can be classified as a mixture of all cultures since American is a melting pot of people
into general usage in the United States after it was used as a metaphor describing a fusion of nationalities, cultures and ethnicities in the 1908 play of the same name.
The desirability of assimilation and the melting pot model has been reconsidered by proponents of multiculturalism, who have suggested alternative metaphors to describe the current American society, such as a "mosaic", "salad bowl", or "kaleidoscope", in which different cultures mix, but remain distinct in some aspects.
Origins of the term.
In
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