Listen to Piano Concerto in D-Flat Major, Op. 38: I. Allegro ma non troppo e maestoso online. Piano Concerto in D-Flat Major, Op. 38: I. Allegro ma non troppo e maestoso is an Instrumental language song and is sung by Yakov Flier, Kirill Kondrashin and Moscow Philharmonic Symphony Orchestra. Piano Concerto in D-Flat Major, Op. 38: I. Allegro ma non troppo e maestoso, from the album Khachaturian: Piano Concerto, Op. 38 & Symphony No. 3, was released in the year 2006. The duration of the song is 13:53. Download Instrumental songs online from JioSaavn.