A short wav that sounds like it could have come from your Atari 2600 in 1983 (but actually came from amSynth in 2019).

A four chord progression (Dm, C, Em, G) played on a Yamaha DX7 set to an electric piano type sound.

Here’s the same progression played through a Moog MF-101 Moogerfooger low pass filter pedal: