Musicians
The musicians of the tango orchestras, with the years the sources place them in each. Every year links its source.
1 musicians
One musician, several orchestras

Roberto Grela
guitar
Each lane follows its source. Overlapping years stay side by side; an unknown end does not imply a departure.
Roberto Grela · guitar- from 1953end not givenAníbal Troilo · Source
- 1955–1956Troilo-Grela · Source
- from 1958end not givenAníbal Troilo · Source
- 1962–1963Troilo-Grela · Source