Listen to Symphony No 7 in A Major, Op. 92: I. Poco Sostenuto online. Symphony No 7 in A Major, Op. 92: I. Poco Sostenuto is an English language song and is sung by RSO Ljubljana and Anton Nanut. Symphony No 7 in A Major, Op. 92: I. Poco Sostenuto, from the album Classical Beethoven 4, was released in the year 2017. The duration of the song is 11:53. Download English songs online from JioSaavn.