A friend posted a picture of their cat, showing its belly as it lay spread across a threshold and suggested that it looked like an audio waveform and essentially dared someone to create such an audio waveform. So I did.
The sound is essentially arbitrary, but it was a fun little challenge to figure a smooth way to make a sound with a waveform that matched (closely) a given image. The length is totally arbitrary, but I figured 35 seconds was plenty.