Listen to Sonata No. 1 in G, Op. 78: Vivace ma non troppo online. Sonata No. 1 in G, Op. 78: Vivace ma non troppo is an English language song and is sung by Jascha Heifetz and Johannes Brahms. Sonata No. 1 in G, Op. 78: Vivace ma non troppo, from the album Jascha Heifetz plays Sonatas for Violin, was released in the year 2013. The duration of the song is 8:58. Download English songs online from JioSaavn.