The composer quarter Hamburg is a museum ensemble in Hamburg. The participating museums are the Telemann Museum, the Carl Philipp Emanuel Bach Museum, the Johann Adolf Hasse Museum and the Brahms Museum. For March 2018, the opening of a Fanny and Felix Mendelssohn Museum and a Gustav Mahler Museum is planned.
The exhibition rooms are located in historically reconstructed town houses on the south side of Peterstraße in Hamburg. The exhibitions present the biographies of the composers associated with Hamburg and important for the European music history of the 18th century, want to convey the historical music life of Hamburg and make references to the city and contemporary history of the epoch. The exhibits include a model of a baroque opera stage, musical instruments such as the Tafelklavier, where Johannes Brahms taught, a Clavichord, the instrument preferred by Carl Philipp Emanuel Bach, and a spinet.
The sponsoring association of the same name was founded by the Carl Toepfer Foundation, the Hamburg University of Music and Performing Arts, the Hamburg Telemann Society, the Carl Philipp Emanuel Bach Society in Hamburg, the Hasse Society Bergedorf, the Fanny-and- Felix Mendelssohn Society, initiated the Johannes Brahms Society Hamburg and the Gustav Mahler Association Hamburg. Patron of the composer quarter is the conductor Kent Nagano.
On December 16, 2014, a symbolic key handover took place for the new showrooms, and on March 19, 2015, the Museumsquartier was officially opened.