Listen to Piano Concerto No. 1 in E-Flat Major, S. 124: I. Allegro maestoso online. Piano Concerto No. 1 in E-Flat Major, S. 124: I. Allegro maestoso is an Instrumental language song and is sung by Emil Gilels, Kirill Kondrashin and Moscow Philharmonic Symphony Orchestra. Piano Concerto No. 1 in E-Flat Major, S. 124: I. Allegro maestoso, from the album Emil Gilels 100, Vol. 32 (Live), was released in the year 2016. The duration of the song is 5:28. Download Instrumental songs online from JioSaavn.