The Motorcycle Diaries (book) not the only person that was editing and reshaping his notes. While Paulo Drinot contends that the Cuban government, as well as others, reworked the texts for self-fashioning or political benefits. However, Drinot also points out that Guevara's introduction explicitly mentions how the notes are "reorganized" and "polished", and that such a practicality should in no way undermine its utility as a historical source. The Motorcycle Diaries (book) The Motorcycle Diaries () is a memoir that traces the early travels of Marxist revolutionary Ernesto "Che" Guevara, then a 23-year-old medical student, and his friend Alberto Granado, a 29-year-old biochemist. Leaving
1950s in music including rockabilly (see below) in the 1950s, combining rock and roll with "hillbilly" country music, which was usually played and recorded in the mid-1950s by white singers such as Carl Perkins, Jerry Lee Lewis, Buddy Holly and with the greatest commercial success, Elvis Presley. Another subgenre, Doo Wop, entered the pop charts in the 1950s . Its popularity soon spawns the parody "Who Put the Bomp". Novelty songs, long a music industry staple, continued their popularity in the Rock and Roll medium with hits such as "Beep Beep". Popular music dominated the charts for the first half of the decade.