reliquary of labor 57
Soundwalk 06: in the basement...
The most obvious sounds heard here are the HVAC and electrical systems. There are visits to various other rooms in the basement of the new NBMAA building: fire alarm and protection systems, hallways and storage area.
You can also hear subtle changes in the sound of these things based on where I was walking or standing. The voices and noises made by workmen are mostly masked by the foreground soundfield.