It is a cover of The opening to St Matthew's Passion (O Lamm Gottes, unschuldig) composed by JS Bach, I've used OpenMPT with Gameboy tones and tried to make it sound as soothing as possible.
Just to let you know, I'm now open for chiptune music commissions. If you have a request, please PM me, and we'll negotiate a price. Check the link below. Thanks
