On June 16, the Caramoor Center for the Arts and Music will open its 90-acre estate for its 73rd summer season. In an evening of theater classics and contemporary songs, Audra kicks off the seven-week festival in a concert with music director Andy Einhorn and the Orchestra of St. Luke’s. Single tickets available on February 20. For those unable to attend in Westchester, the concert will be broadcast live on Classical 105.9 WQXR, Classical 90.3 FM Ossining, and streamed at www.wqxr.org.