For this trophy, you need to spin the 7 trash cans located throughout the level 'HIT THE ROAD' on the map 'THE HAZARDOUS WASTES'
The first three trash cans can be found at the beginning of the level to the left of your starting location.
The remaining four are found to the left of the bonus level pad around half way through the level.
You will know that you have hit the trash cans successfully when you see musical notes floating above them. Note that dying does not reset your progress with this.