composed more than four hundred songs, fifty of which have given him international fame. His most well-known songs include Voy a apagar la luz (I'm Going to Turn Off the Lights), Contigo Aprendí (With you I Learnt... ), Adoro (Adore), No sé tú (I don't know if you...), Por Debajo de la Mesa (Under the Table) Esta Tarde Vi Llover (English version "Yesterday I Heard the Rain"), Somos Novios (English version "It's Impossible"), Felicidad (Happiness) and Nada Personal (Nothing Personal). Some renowned trios románticos were Trio Los Panchos, Los Tres Ases, Los Tres Diamantes and Los Dandys. Trio Bolero, a unique ensemble of two guitars and one cello. Other singers in singing boleros in Mexico are Óscar Chávez, José Ángel Espinoza and Álvaro Carrillo. Included among the acclaimed interpreters of the bolero on the radio and the international concert stage were the Mexican tenors Juan Arvizu and Nestor Mesta Chayres. The brother of Aida Cuevas, "the Queen of the Ranchera," Carlos Cuevas has been equally successful as an interpreter of the bolero and Eugenia León in Mexico's contemporary music scene. Romantic ballad or Latin ballad The Latin or romantic balled has its origin in the Latin American bolero in the 1950s (Lucho Kitten, Leo Marini), but also in the romantic song in Italian (Nicola Di Bari) and French (Charles Aznavour) in the 1960s and 1970s. The ethnomusicologist Daniel Party defines the romantic ballad as "a love song of slow tempo, played by a solo singer accompanied by an orchestra usually". The ballad and bolero are often confused and songs can fall in one or the other category without too much precision. The distinction between them is referring primarily to a more sophisticated and more metaphorical language and subtle bolero, compared with a more direct expression of the ballad. In Mexico, the first ballad that is registered as such is "Sonata de Amor" (Sonata of Love) of Mario Alvarez in 1961. In 1965, bolero singer-songwriter Armando Manzanero recorded his first ballad, "Pobres besos míos" (My Poor Kisses). The heyday of the ballad was reached in the mid-1970s, where artists such as José José, Camilo Sesto, Raphael, Roberto Carlos, Rocío Dúrcal and others released many hits. The main hist of José José were "El triste" (The Sad One) by Roberto Cantoral, "La nave del olvido" (The ship of the forgotten), "Te extraño" (I Miss You), "Amar y querer" (Love and want), or