This is one of Piazzolla's best-known tangos, here in an arrangement for 4 double basses by the Argentinean bassist Andrés Martin, who has also arranged the piece as a duo for double bass and piano, double bass and harp, and for double bass and guitar. The latter arrangement can be admired in an impressive
video on YouTube on the Internet. The sheet music for all four versions is available from PRObass Musikverlag.
Translated with www.DeepL.com/Translator (free version)