New update to my V3 Standard cover of Green Hill Zone from the Sega Game Gear/Master System version of  Sonic 1. 
PSG and Bass channel layers are now Mario Paint Gameboys. Noise channel layer(Drums) have been tweaked

The trick I used for getting the twangy square wave sound you hear in the song is to place 1/32nd notes in front of the existing 1/8th notes.

[Full original with oscilloscope](https://www.youtube.com/watch?v=5En9Ly8w-ZI)

[Original's oscilloscope Deconstruction](https://www.youtube.com/watch?v=_3dML5xZ8Gc)

New update to my V3 Standard cover of Green Hill Zone from the Sega Game Gear/Master System version of Sonic 1. 
PSG and Bass channel layers are now Mario Paint Gameboys. Noise channel layer(Drums) have been tweaked
The trick I used for getting the twangy square wave sound you hear in the song is to place 1/32nd notes in front of the existing 1/8th notes.
<a href="https://www.youtube.com/watch?v=5En9Ly8w-ZI" rel="noopener nofollow ugc">Full original with oscilloscope</a>
<a href="https://www.youtube.com/watch?v=_3dML5xZ8Gc" rel="noopener nofollow ugc">Original’s oscilloscope Deconstruction</a>

Green Hill Zone(Game Gear) V3S v.2