Listen to Six Pieces for Piano, Op. 51: IV. Natha-Valse in A Major online. Six Pieces for Piano, Op. 51: IV. Natha-Valse in A Major is an Instrumental language song and is sung by Michael Ponti. Six Pieces for Piano, Op. 51: IV. Natha-Valse in A Major, from the album 111 Tchaikovsky Masterpieces, was released in the year 2012. The duration of the song is 2:19. Download Instrumental songs online from JioSaavn.