Listen to R. Strauss: II Improvisation. Andante cantabile online. R. Strauss: II Improvisation. Andante cantabile is an English language song and is sung by Sarah Chang and Wolfgang Sawallisch. R. Strauss: II Improvisation. Andante cantabile, from the album Strauss: Violin Concerto, was released in the year 2000. The duration of the song is 8:34. Download English songs online from JioSaavn.