PHOTO CALL: Liza Minnelli and Tony Danza Join Nicolas King Onstage at Iridium

Tony Danza, who recently penned the book "I'd Like to Apologize to Every Teacher I Ever Had," and Liza Minnelli joined Nicolas King onstage at King's Oct. 9 performance at the Iridium Jazz Club in Times Square, presented by ScoBar Entertainment.

Here is a look at the impromptu duets: