Rock 'n' Roll is a Special Research story that is part of Roggenrola Community Day.
There are several ways for players to get involved in the event. There is an event-exclusive Special Research Story, which is dubbed Rock-N-Roll.
2000 Stardust, Roggenrola Encounter, 1 Star Piece
1500 XP, Roggenrola Encounter, 1 Star piece.
2500 XP, 1 Rocket Radar, 15 Ultra Balls
3000 Stardust, Gigalith Encounter, 3 Rare Candy