ShowShowWitness: The Tour: MonterreyMay 9, 2018Katy Perry, CYNArena Monterrey · Monterrey, MexicoFollowI was thereUpload from this showMediaLineupAboutDateMay 9, 2018VenueArena Monterrey · Monterrey, MexicoArtistsKaty Perry, CYNListingConfirmedShow details from MusicBrainz.