Listen to Sonata No. 1: Moderato online. Sonata No. 1: Moderato is an English language song and is sung by Jascha Heifetz and Ernest Bloch. Sonata No. 1: Moderato, from the album Jascha Heifetz plays Sonatas for Violin, was released in the year 2013. The duration of the song is 7:27. Download English songs online from JioSaavn.