Jon Wirtz Acoustic Trio Friday, April 22, 2016 8:00 PM 11:59 PM 20:00 23:59 Crimson Room 1403 Larimer Street Denver, CO, 80202 United States (map) Google Calendar ICS Featuring Gabriel Mervine (trumpet), Charlie Mertens (bass), and Jon Wirtz (piano), this trio swings hard.