Arduino Synth Code and Schematic

Here is the link to the code: https://drive.google.com/open?id=12D6UJRnIXc7FW_1aZsWLHy9Z4BviQcMK Here is the link to the schematic: https://drive.google.com/open?id=12Ahf9vCxLc1stjwXp5Rhfy6XiM9faoBs