The lineup of Venetian headliners Human Nature, from left: Phil Burton, Andrew Tierney, Mike Tierney and Toby Allen, are shown at Venetian Theater during a taping for PBS on May 23, 2017. (Human N …

The lineup of Venetian headliners Human Nature, from left: Phil Burton, Andrew Tierney, Mike Tierney and Toby Allen, are shown at Venetian Theater during a taping for PBS on May 23, 2017. (Human Nature)