Bach, JS - Trio Sonata No. 1 in E flat, BWV 525 (arr)  Ref: 3--012 arranged for 2 violins and cello Bach wrote six three-movement trio sonatas for organ. This is one of three that Ourtext has arranged for strings. The cello part (originally written with feet in mind) is rather less mobile than the others, but none the less rewarding. No-one wrote more vigorous bass lines than Bach. A minor adaptation at one point brings the first violin part within the compass of a flute. see sample score