30-Day Video Game Music Challenge (Super Hard Mode)
Day 3: 8-Bit music
From Metal Gear 2: Solid Snake (MSX2 + MSX-AUDIO, July 20, 1990)

Happy 30th anniversary to Metal Gear 2! Not to be confused with Metal Gear Solid 2, though this is where Metal Gear Solid’s famous sneaking mechanics came from.

Source: YouTube, challenge by OverClocked ReMix I think?, via NintendoCapriSun