A recording of a close pass by an inter-city (fairly fast) train. It was recorded about 5m away from where the train passes. There are some birds singing and the low hum is from the electricity pylons that run overhead.
Fluorescent light is turned on, it flickers for a moment trying to strike then that wonderful fluorescent hum. There is also some scary electrical noises when the switch is flipped. Recorded on a sound canvas 702 with preamp with akg c414b microphone.