I used a midi loop of a guitar sound and an effect to create a weird down-shifting trailing short melody sample. I used ableton live and its grain delay plugin.
This is the sound of a buderus boiler firing in a basement recorded in stereo with a sound devices mixpre 3 and a pair of audio technica at943 microphones.
Recording of my panasonic dmr-ez37vk vcr, using both the ms capsule on the zoom h6, as well as a mono feed of a shure beta-58. Minimal compression in post. Going through all of the options, play, stop, ff, rewing, etc.