The Argentinian bandleader, composer, arranger, and tango performer Aníbal Troilo was a leading 20th century proponent of the bandoneon. Ástor Piazzolla played and arranged in Troilo's orquesta from 1939 to 1944. Piazzolla's "Fugata" from 1969 showcases the instrument, which plays the initial fugue subject on the 1st statement, then moves on to the outright tango after the introduction.