renderAction() {
    if (this.props.isRemoval) {
      return (
        <a className='Track-action' onClick={this.removeTrack}>
          {' '}
          -{' '}
        </a>
      );
    } else {
      return (
        <a className='Track-action' onClick={this.addTrack}>
          {' '}
          +{' '}
        </a>
      );
    }
  }
//Provides a + and - symbol for removing or adding tracks to the tracklist.
Provides a + and - symbol for removing or adding tracks to the tracklist.
Provides a + and - symbol for removing or adding tracks to the tracklist .
renderAction() {
    if (this.props.isRemoval) {
      return (
        <a className='Track-action' onClick={this.removeTrack}>
          {' '}
          -{' '}
        </a>
      );
    } else {
      return (
        <a className='Track-action' onClick={this.addTrack}>
          {' '}
          +{' '}
        </a>
      );
    }
  }
renderAction ( ) { if ( this . props . isRemoval ) { return ( < a className = 'Track-action' onClick = { this . removeTrack } > { ' ' } 
          - { ' ' } < / a > ) ; } else { return ( < a className = 'Track-action' onClick = { this . addTrack } > { ' ' } 
          + { ' ' } < / a > ) ; } }
Provides a + and - symbol for removing or adding tracks to the tracklist.
Provides a + and - symbol for removing or adding tracks to the tracklist .