Listen to Violin Concerto: I. Allegro deciso online. Violin Concerto: I. Allegro deciso is an Unknown language song and is sung by London Philharmonic Orchestra, Sir Thomas Beecham and Joseph Szigeti. Violin Concerto: I. Allegro deciso, from the album R. Strauss & Bloch: Don Quixote - Violin Concerto, was released in the year 2021. The duration of the song is 18:10. Download Unknown songs online from JioSaavn.