Foster and Partners has unveiled its 'Music Sitooterie', a silver, inflated canopy resting on stainless steel legs, beneath which visitors to its Northumberland garden site can sit, rest, and listen to music. They can also spend time thinking of Foster's other building to be built in the region, the Gateshead Music Centre - which the structure is designed to resemble. The sitooterie is part of the exhibition of other similar pavilion-like structures (AJ 4.5.00) designed to sit out in, or on, running until 31 October at Belsay Hall.The Foster sitooterie covers a ring of 10 boulders of Belsay stone in the neo-classical hall's Quarry Garden. Some of the exhibits are already showing signs of disrepair, however. FAT 's miniature church is losing its panels of blue and silver sequins and Inflate's bandstand has had to be dismantled.