A wonderful work is the Tango Operita "Maria de Buenos Aires," by Astor Piazzolla. Teldec (2 cd, about 94 minutes short) issued the album, with a very comprehensive booklet with full translation of the libretto in Spanish, English, French and German. Music by Piazzolla, libretto by Horacio Ferrer, orchestra led by Gidon Kremer.
A masterpiece, capturing the soul of the Tango.