Chino Hills Drumline 2022, Behind the Scenes
Ian Grom podcast with Mind, Body & Pockets
Pulse Percussion live stream interview with John Mapes
2020 Interview with Ian Grom by Adam Tan
2018 Interview with John Mapes by the Gridbook Series
Broken City Music Podcast - w/Guest John Mapes
Broken City Music Podcast - w/Guest Ian Grom
