Jorge López Ruiz (1 April 1935 – 11 December 2018) was an Argentine jazz double bassist, cellist, pianist, composer and arranger.
Between 1967 and 1970, he was a musical director for CBS in Argentina, working with a number of successful Argentine pop artists, such as Sandro and Leonardo Favio.
Both El grito and Bronca Buenos Aires were identified as reflecting a spirit of rebellion in face of the civil-military dictatorships that governed Argentina following the 1966 Argentine Revolution.
In 1978 he composed Un hombre de Buenos Aires for the city's 400th anniversary, featuring Dino Saluzzi on bandoneon, Pablo Ziegler on piano, Andrés Boiarsky on soprano saxophone, and Donna Caroll on vocals, among others.
[2] After the 1976 coup d'état and the subsequent military dictatorship, López Ruiz left Buenos Aires and emigrated to the United States.