The Hanover Square Rooms or the Queen's Concert Rooms were assembly rooms established, principally for musical performances, on the corner of Hanover Square, London, England, by Sir John Gallini in partnership with Johann Christian Bach and Carl Friedrich Abel in 1774. For exactly one century this was the principal concert venue in London. The premises were demolished in 1900.

Johann Christian Bach was a German composer of the Classical era, the youngest son of Johann Sebastian Bach. He received his early musical training from his father, and later from his half-brother, Carl Philipp Emanuel Bach in Berlin. After his time in Berlin he made his way to Italy to study with famous Padre Martini in Bologna. While in Italy, J.C. Bach was appointed as an organist at the Milan Cathedral. In 1762 he became a composer to the King’s Theater in London where he wrote a number of successful Italian operas and became known as "The English Bach". He is responsible for the development of the sinfonia concertante form. He became one of the most influential figures of the classical period, influencing compositional styles of prolific musicians like Haydn and Mozart.