"El Reloj Cucú" (English: The Cuckoo Clock) is the third and last radio single and the fourth track from Maná's fourth studio album, Cuando los Ángeles Lloran in 1995. On the week of March 16, 1996 the song debuted at number forty on the U.S. Billboard Hot Latin Tracks and after three weeks later on March 30, 1996 it reached its highest point at the number thirty-four spot for only one week. It would stay for a total of 3 weeks.