KT Sullivan and Mark Nadler invite one and all to “A Swell Party—RSVP Cole Porter,” celebrating the timeless words and music of the supreme musical sophisticate of the 20th century whose witty, naughty and romantic songs continue to enthrall audiences today as they did in the Jazz Age. Among selections are “It’s De-lovely,” “I’ve Got You Under My Skin,” “Let’s Do It,” “”Night and Day,” “Begin the Beguine,” and “I Love Paris.”