Listen to Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso online. Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso is an Instrumental language song and is sung by Maria Yudina, Natan Rakhlin and Ukrainian State Symphony Orchestra. Piano Concerto No. 1 in B-Flat Minor, Op. 23: I. Allegro non troppo e molto maestoso, from the album Maria Yudina. Grand Collection. Volume 6 (Live), was released in the year 2020. The duration of the song is 19:39. Download Instrumental songs online from JioSaavn.