Argentine tango musicians

Eduardo Arolas (February 24, 1892 – September 29, 1924) was an Argentine tango bandoneon player, leader and composer.
Arolas first learned to play the guitar before learning the bandoneon which became his instrument of choice. His nickname was El Tigre del bandoneón (the tiger of the bandoneon).
Arolas composed his first tango in 1909 before he could even read or write music. He went on to play with such early masters as Agustín Bardi and Roberto Firpo.
In 1917 Arolas moved to Montevideo where he settled, he played a number of times at the Teatro Casino. From 1920 he resided mainly in Paris where he died alone and alcoholic in 1924.

Aníbal Carmelo Troilo (11 July 1914 – 18 May 1975), also known as Pichuco, was an Argentine tango musician.
Troilo was a bandoneon player, composer, arranger, and bandleader in Argentina. His orquesta típica was among the most popular with social dancers during the golden age of tango (1940–1955), but he changed to a concert sound by the late 1950s.
Troilo's orchestra is best known for its instrumentals, though he also recorded with many well-known vocalists such as Roberto Goyeneche, Edmundo Rivero and Francisco Fiorentino. His rhythmic instrumentals and the recordings he made with vocalist Francisco Fiorentino from 1941 to 1943, known as milongas, were some of the favourites in tango salons. The renowned bandoneonist Astor Piazzolla played in and arranged for Troilo's orquesta típica during the period of 1939–1944.