The variables, classes, helper functions, etc. declared in the specs can and should be within the scope of each spec's outer `describe()` function. - [ ] AudioChart.js - [ ] DataWrappers.js - [ ] KeyboardHandler.js - [ ] PitchMappers.js - [ ] Player.js - [ ] Sounder.js - [ ] getAudioContext.js - [ ] visualCallbackMakers.js