The Prototype was made as a first draft, initially using libraries to help establish the underlying logic. I also realised I could include an LED and serial monitor to get more marks. Thus, it was modified and improved in the Final version.
Prototype: https://www.tinkercad.com/things/a9mOXm0eM2W
Final: https://www.tinkercad.com/things/3O3h7c574gt-arduinopianotilescab202