This document provides an overview of tango music in 6 sections: the origin of tango music in Argentina and Uruguay in the 19th century; the influence of African and European immigrants on its development; famous tango musicians like Carlos Gardel and Astor Piazzolla; examples of tango music to listen to; the musical traits of tango including common instruments like bandoneón, piano, and double bass, and a tempo of 2/4 or 4/4 time; and the influence of other genres on tango music over time.