The English Chamber Orchestra (ECO) is a British chamber orchestra based in London. The full orchestra regularly plays concerts at Cadogan Hall, and their ensemble performs at Wigmore Hall. With a limited performance size, the orchestra specializes in 18th-century music and was created to perform Baroque Music. The orchestra regularly tours in the UK and internationally, and holds the distinction of having the most extensive discography of any chamber orchestra and being the most well-traveled orchestra in the world; no other orchestra has played concerts (as of 2013, according to its own publicity) in as many countries as the English Chamber Orchestra.

Daniel Barenboim is an Argentine-born classical pianist and conductor based in Berlin. From 1992 until January 2023, Barenboim was the general music director of the Berlin State Opera and "Staatskapellmeister" of its orchestra, the Staatskapelle Berlin.