Basic Single class implementation

AnimationFeature.js

import SoundFx from '../../SoundFx';

export default function AnimationFeature() {
  const target1 = document.getElementById('AnimationCube1');
  // ...more targets...

  target1.addEventListener('mouseenter', () => {
    SoundFx.Single.play('animationUp1');
  });

  // ...more mouseenter listeners...

  target1.addEventListener('mousedown', () => {
    SoundFx.Single.play('animationDown1');
  });

  // ...more mousedown listeners...
}