For a remarkably fun 90 minutes Saturday, Harry Connick Jr. — singer, pianist, composer and ace showman — delivered a musical time-space collision of Broadway and New Orleans. The production successfully blends theatrical elements with an otherwise relatively straightforward concert approach. The production is bedazzled throughout with various theatrical flourishes — film projection elements, a couple of scripted dialogue bits and a handsome lighting design.Connick and his collaborators have created a spirited and generous tribute show with several delightful surprises.