Listen to Violin Concerto No. 4: IV. Lento online. Violin Concerto No. 4: IV. Lento is an Instrumental language song and is sung by Gidon Kremer, Gennady Rozhdestvensky and Moscow Conservatory Symphony Orchestra. Violin Concerto No. 4: IV. Lento, from the album Schnittke: Violin Concerto No. 4 (Live), was released in the year 2014. The duration of the song is 10:09. Download Instrumental songs online from JioSaavn.