Bridge Music is the work of composer Joseph Bertolozzi, who recorded sounds of bridge surfaces (including the suspension ropes, railings, girders, and conduit) being hit with various mallets. The resulting 11-track album contains no sounds outside of what was recorded using the Mid-Hudson Bridge itself, a Hudson Valley suspension bridge in Poughkeepsie, New York. (Bertolozzi was actually born in Poughkeepsie.) The audio installation is experienced from listening stations that house 12 buttons (one for each track of the album and an additional composition called “Suite Poughkeepsie”) on the north-facing side…