Walkthrough

1. For completing this request, you can get DJ Rotom as a reward.
2. Talk to Scorbunny and they'll ask you to investigate the mysterious music coming from the walls.
3. Rock Smash your way through the area and you'll find another small mine.
4. Power up your Rock Smash to clear the path ahead. If you haven't learned this yet, be sure to progress the Make a Hamburger Steak request or eat a Hamburger Steak.
5. Talk to the mysterious orange machine emitting music inside to trigger a cutscene with DJ Rotom. For discovering them in this mine, they'll become one of your friends.
6. Head back outside and tell Scorbunny about your discovery to end the quest.

Walkthrough source: Game8.