Who is che guevera’s friend who accompanies him in his road  trip by motorcycle as described  in a jorge drexlers song?
Al otro lado del río "Al otro lado del río" (English: On the Other Side of the River ) is a song, written and performed by Uruguayan singer Jorge Drexler for the film "The Motorcycle Diaries" (2004). Besides the film's soundtrack, it can also be found in Drexler's seventh album "Eco"; in the soundtrack the bassist Jeff Eckels also performed.
Porro The porro is a musical style and dance from the Caribbean region of Colombia. It is a Colombian cumbia rhythm that developed into its own subgenre. It was originally a folkloric expression from the Sinú River area that evolved into a ballroom dance. It is played mostly by brass bands or orchestras, and danced in couples. This genere influenced some of the greatest Latin American Bands of the 60's, with songs such as "Pachito E'ché" (originally from Wolfgang Alejandro Tovar García, then interpreted by Benny Moré), "Se va el Caimán", and "Me voy pa'Cataca" (originally from José María Peñaranda, then interpreted by La Sonora Matancera.)