Z100 has your tickets to see Katy Perry's 'Witness' Tour at Madison Square Garden on October 2nd, Prudential Center on October 8th, OR Barclays Center on October 11th! Tickets go on-sale Monday, May 22nd at 10am but keep it locked all weekend long for your chance to win.
Friday: Elvis Duran Morning Show, 3pm, 10pm
Saturday: 11am, 1pm, 3pm, 5pm, 7pm
Sunday: 12pm, 2pm, 4pm, 5pm