Click the game or press a key to let the browser start the music; M turns it off.
Everything is sprites and bitmap text moved by sines, and the bars swap in front of and behind each other by zIndex. The scanlines are a post effect.
The music is synthesized by the example into a WAV (a square-wave arpeggio, a bass, a kick and a hi-hat, over the chord progression half the demoscene used) and played with useSound.