The phrase "los temerarios conciertos" means "Los Temerarios concerts" and is a term used to search for concerts by the Mexican band Los Temerarios. "Temerario" is a Spanish adjective that means "bold" or "reckless," but here it refers to the band.
Los Temerarios is a group formed in 1978 by Adolfo and Gustavo Angel, who are brothers, and their cousin, Fernando Angel. The band plays mostly romantic songs or "balladas" in Spanish. Concert dates are available on the group's website, LosTemerarios.net. As of April 2015, Los Temerarios tours worldwide with a focus on North and South America and has released more than 20 albums.