Built in about 1730, this was a summer house in the garden behind the Sun Hotel (though the garden was owned by Oliver Marton of 76 Church Street, not the Hotel). On 25 November, 1745, Charles Stuart, 'Bonny Prince Charlie' visited the garden, having earlier proclaimed himself King at the market cross, to the complete indifference of the locals.

Apart from having a striking façade in an otherwise plain, quiet square, the Music Room is renowned for the Baroque plasterwork of its eponymous music room, on the first floor – see the photos on the following pages.

It's possible to imagine the Music Room being used by a local Masonic lodge after the Marton family sold the garden, but by the 19th Century the land was owned by the Sewards' ironworks/stained glass firm and at one point this was a factory (bear that in mind when you look at the interior photos) before falling into severe decrepitude within a complex of tightly-packed and decaying industrial premises which the Landmark Trust bought and demolished in the 1970s, creating an attractive pedestrian square and exposing a heavily renovated, Grade II* Listed, Music Room.
The stonework was cleaned and repaired, the third-floor windows unblocked and moved, the roof parapet rebuilt, the central ground-floor arch glazed (enclosing what had been an open loggia) and the first-floor Music Room itself wonderfully restored. Repair/reconstruction of the plasterwork by Allied Guilds of Sutton Coldfield took 6,000 hours, using original fragments wherever possible.

It's only open to the public on special occasions such as today's Heritage Day, but there's a café & jewellry shop on the ground floor & mezzanine. The building is still owned by the Landmark Trust, who offer an apartment on the third floor for let, and I'm told it's possible to hire the roof garden for events.