Listen to Piano Concerto No. 1 in C Minor, Op. 35: I. Allegretto online. Piano Concerto No. 1 in C Minor, Op. 35: I. Allegretto is an Instrumental language song and is sung by Lukas Geniušas, Aylen Pritchin, Alexander Buzlov, Alexander Sladkovsky, Tatarstan National Symphony Orchestra and Tatarstan National Symphony Orchestra. Piano Concerto No. 1 in C Minor, Op. 35: I. Allegretto, from the album Shostakovich: Complete Concertos, was released in the year 2017. The duration of the song is 5:56. Download Instrumental songs online from JioSaavn.