e was born in the neighborhood of La Paternal, city of Buenos Aires. At home tango was heard but also classical music and flamenco (influenced by his grandparents Manuel and Pastora who were born in Jerez de la Frontera).

His early memories are always accompanied by some tango music like that of his admired Aníbal Troilo that he heard in the Argentinos Juniors stadium when he was a child and used to go there with Francisco, his father. The latter, with great effort, bought a brown Doble A bandoneon with mother-of-pearl inlays for his twelfth birthday (1945) and he still keeps it.

He began to study music with maestro Luis Servidio. Soon thereafter his father died and Servidio offered him a job at the Patio Criollo, a big dancehall in the now disappeared Parque Retiro. So, all of a sudden, he found himself with long trousers and his bandoneon on a stage one year after he had started his learning. He continued with that orchestra until 1950 and later he joined the one led by Juan Canaro on recommendation by the violinist Alberto Talián.

In 1951, he played in the Hugo Baralis orchestra that accompanied the singer Alberto Marino. And, that same year and the following, in the orchestra fronted by Alberto Mancione and recorded several discs.

In the early 1953, he began to work with Alfredo Gobbi and stayed until 1957 playing on Radio El Mundo and at dancehalls, making a large number of tours and recording several discs during that tenure.

En 1956, he joined the Francisco Rotundo orchestra with which he committed to record several numbers and later he joined the orchestra led by Roberto Caló. At that time when tango was much in demand he simultaneously was member of several aggregations, like the ones of: Joaquín Do Reyes, Ricardo Malerba, Jorge Argentino Fernández, Enrique Rodríguez, Emilio Orlando, Manuel Buzón, among several others. Out of these orchestras, he recorded with Caló, Malerba, Mancione and Marino. In 1958 he was member of the Lezica-Lavié orchestra, conducted by the bandoneonist Antonio Marchese, and recorded several numbers.

With Florindo Sassone —from 1956 to 1967— he shared years of busy work with appearances, recordings, tours (Japan, among others) and on Radio El Mundo, in the Glostora Tango Club show.

In 1963, he put together an orchestra to back up the singer Andrés Falgás on a three-month tour of Colombia. Then he summoned the pianist Osvaldo Requena, who years later would form his own group and with it he would stage the show Tango Sessions. In the latter he played as bandoneon soloist.

In 1965, he joined the orchestras led by Leopoldo Federico and by José Basso. And later he again played in both orchestras on different occasions for several seasons. With Leopoldo Federico he cut several long-playing records and made a tour of several cities of Brazil.

With the violinist Tito Besprovan and the pianist Osvaldo Berlingieri he traveled to Miami in 1967 accompanying the singers Ginamaría Hidalgo and Siro San Román.

From 1984 to 2007 he joined the Orquesta Nacional de Música Argentina Juan de Dios Filiberto as lead bandoneon under the conductions of maestros Osvaldo Requena, Osvaldo Piro, Atilio Stampone and Néstor Marconi.

The Banco Provincia de Buenos Aires awarded him the Aníbal Troilo Prize at the Bandoneon Contest in 1987. The board at that contest included: Horacio Salgán (president), Leopoldo Federico, Carlos García, Roberto Di Filippo.

He was member of the Mariano Mores orchestra for a period of appearances at the Teatro Colón and the Teatro Ópera in 1995. In 1992 he made another tour of Japan accompanying the dancers Gloria and Eduardo Arquimbau with a group for which he wrote all the arrangements and compositions.

In 1993, he appeared at the Festival de Tango of Granada as soloist in Tango Sessions under the direction of Osvaldo Requena.

In 1996, he made new tours of Japan with the Julián Plaza orchestra and with Tango Sessions. Two years later he toured Sweden, France, Japan and Chile with the «Juan de Dios Filiberto» Orchestra led by Piro. In 2004: another tour with Osvaldo Requena (Tango Sessions). He made another one in October 2008 with his quintet and the singer Alberto Bianco and three dancing teams at the show Super Tango 2008.

In 2003, the Orquesta Todo Corazón was born —an iniciative of the cardiologist and violinist Pablo Chiale— and in it Pazo was appointed leader. It was put together to raise funds for two foundations that help patients with heart disease. They recorded three discs: Música desde el corazón (2003), Tangos para vos... de Todo Corazón (2004) and Latidos (2006). The latter disc has two leaders: Carlos Pazo for the first half and the violinist Mauricio Marcelli for the second.

As composer his outstanding tangos are: “Monólogo”, recorded in Colombia (1963) by the Los Reyes del Tango orchestra, led by Pazo with the vocalist Andrés Falgás. It was also cut by the Todo Corazón Orchestra (2006) and El Arranque on two occasions. “Pa’l arranque” committed to disc by El Arranque (2002) and by Todo Corazón (2003). “Para vos”, also by Todo Corazón (2004) and by the orchestra led by Érica Di Salvo (2006). In 2006 the Orquesta Astrorico of Japan on the 15th anniversary of its inception recorded a disc which was presented in a concert entitled Para Vos to pay homage to its composer for his tango career in Japan. “Caricias de nácar”, with words by Renata Lamborghini, tango premiered on November 22, 2007 at the Academia Nacional del Tango, recorded in Japan by Roberto de Lozano and in Buenos Aires by Martín Alvarado.

Gustavo Santaolalla summoned him for his release Café de los Maestros, volumes I and II. Coincidentally with the presentation of the last volume, a documentary film was shot that starred all the maestros. Furthermore, the Orquesta de los Maestros was put together and he played with them at special concerts at the Teatro Gran Rex (Dec/11/2008) and in Palermo (Feb/28/2009).

In another documentary distributed worldwide, Si sos brujo... una Historia de Tango (2005), shot by Caroline Neal, the activity of some tango masters —Carlos Pazo, among them— who had regularly been invited to conduct the Orquesta Escuela de Tango Emilio Balcarce is showcased.