Listen to Trio Sonata No. 1 in E-Flat, BWV 525: I. Allegro moderato online. Trio Sonata No. 1 in E-Flat, BWV 525: I. Allegro moderato is an Unknown language song and is sung by Julian Bream and George Malcolm. Trio Sonata No. 1 in E-Flat, BWV 525: I. Allegro moderato, from the album The Essential Julian Bream [International Version], was released in the year 2008. The duration of the song is 2:45. Download Unknown songs online from JioSaavn.