Listen to Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro ma non troppo e molto maestoso online. Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro ma non troppo e molto maestoso is an English language song and is sung by Emil Gilels. Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro ma non troppo e molto maestoso, from the album Tchaikovsky: Piano Concerto No. 1 - Schumann: Piano Sonata No. 1, was released in the year 2006. The duration of the song is 18:46. Download English songs online from JioSaavn.