Itch my Glitch by Two Bunny Samurais
Runs on an Arduino Uno R3
16 MHz, 32k flash, 2k RAM

Code: Antiemes
Music: Helguli

The Arduio Uno has a second microcontroller for
serial-USB communication. This was repurposed
to generate audio.

Source: github.com/Antiemes/Itch_my_Glitch