Get “Swish Swish” off Katy’s new album ‘Witness’: katy.to/witnessYd WITNESS: The Tour tickets available now! www.katyperry.com/tour Stream "Swish Swish": katy.to/SwishSwishYD Subscribe to Katy’s official YouTube channel: youtube.com/KatyPerry Follow Katy Perry: www.katyperry.com youtube.com/katyperry twitter.com/katyperry facebook.com/katyperry instagram.com/katyperry vevo.ly/I1gIu8