An Irish singer performing on Saint Paddy’s Day? Who’d-a thunk it? Theoretically, Michael Londra Londra is a Celtic-influenced “classical crossover artist” like Enya or Loreena McKennitt, but all I hear is adult-contemporary smooth — it’s sincere but cheesy as hell. The former Riverdancer will do a bit of dancing, too, and he'll be backed by a full Celtic band. 8 p.m., Largo Cultural Center, Largo, $35.

As part of its After Hours programming, American Stage welcomes Bay Area Improv Theatre (BAIT) for a series of shows featuring BAIT's long-form improvised scenes and skits, which change night by night and kick off with a one-word suggestion from the audience. March 17-April 11, 8 p.m. Tues., 11 p.m. Fri.-Sat., American Stage, St. Petersburg, admission is on a "pay-what-you-can" basis.

Tune into WEDU-Ch. 3 today for some special St. Patrick's Day programming: 1 p.m., Daniel O’Donnell: Hope and Praise, the ninth public television special spotlighting the Irish singer from Branson, Missouri, who performs hymns, up-tempo gospel songs and pop tunes with a young adult choir, a children’s choir, an orchestra, O’Donnell’s band and his longtime performance partner, Mary Duff; 8 p.m., Chris Botti in Boston, a showing of the acclaimed trumpeter's PBS special with the Boston Pops Orchestra and guests like Sting, John Mayer, Yo-Yo Ma, Steven Tyler and Lucia Micarelli, as well as a live appearance by Botti at WEDU Studios for its annual pledge drive; and 10 p.m., Celtic Woman: The Greatest Journey, about the contemporary Celtic music group and made up of highlights taken from three separate PBS specials.

Tonight, Pangea Cafe hosts a "How to Survive a Trainwreck Economy" seminar by P. Christopher Music of Wealth Advisory Associates, who talks about how to invest longterm assets with no market risk and still get competitive returns, how to get out of debt, and more. 7-9 p.m., 34 N. Fort Harrison Ave., Clearwater; RSVP to 727-588-1540 or 727-278-6757.