Listen to Symphony No. 1: I. Molto sostenuto - Allegro online. Symphony No. 1: I. Molto sostenuto - Allegro is an Instrumental language song and is sung by Rauf Abdullayev and Azerbaijan State Symphony Orchestra. Symphony No. 1: I. Molto sostenuto - Allegro, from the album Kara Karayev: Symphony No. 1, Violin Concerto, Albanian Rhapsody, was released in the year 2018. The duration of the song is 19:29. Download Instrumental songs online from JioSaavn.