WHAT The Long Island Philharmonic concludes its summer series of free concerts outdoors on back-to-back nights. The program features maestro David Stewart Wiley's "Concentric Circles," plus a nod to the Olympics (the theme from "Chariots of Fire") and an "A" list of "B" composers: Beethoven, Brahms, Bizet and Berlioz. Friday's Eisenhower Park concert is the orchestra's only Nassau County performance this summer.
ADMISSION Free; liphilharmonic.com, 631-293-2222
DANCE: Savion Glover
WHAT Savion Glover displays his tap genius in "Broadway Celebrates Variations," a show benefiting Huntington's Variations, A Dancer's Studio. Joining the Tony-winning Glover ("Bring in 'Da Noise, Bring in 'Da Funk") are Brandon Rebendall of "Spider-Man: Turn Off the Dark" and David Lerner of "Mary Poppins," among others.
WHEN | WHERE 7 p.m. Monday, the Paramount, 370 New York Ave., Huntington
TICKETS $75-$200 (including cocktail reception); variationsdancestudio.com, 631-425-9220 -- steve parks
WHAT Michael Londra, whose tenor voice soared above the stomping feet of Riverdance on Broadway, brings his new company, Celtic Fire, to Patchogue for its Long Island debut. A Gateway Playhouse presentation, this interactive performance -- yes, you may be asked to show off your footwork -- fuses music, dance and storytelling in the Irish tradition. We dare you to remain dry-eyed through "Danny Boy."
WHEN | WHERE Friday and Saturday nights at 8, 71 E. Main St., Patchogue
TICKETS $59; gatewayplayhouse.org, 631-286-1133
WHAT For its summer finale, Bay Street presents a world-premiere musical, "Big Maybelle: Soul of the Blues," starring Tony winner Lillias White ("The Life") in the title role of the late blues legend Maybelle Smith.
WHEN | WHERE Friday, Saturday, Tuesday and Thursday at 8 p.m., Sunday at 7 p.m., Wednesday at 2 and 8 p.m., Bay Street Theatre, Long Wharf, Sag Harbor, through Sept. 2
TICKETS $66-$76; baystreet.org, 631-725-9500
Bare Bones Theater Company presents a rarely performed Neil Simon comedy, "Fools," based on Russian folk tales. The show closed after 41 Broadway performances because, according to rumor, Simon didn't want his ex-wife to profit in the divorce settlement. "Fools" runs Thursday through Saturday nights at 8, Sunday at 7 p.m. through Aug. 18, 57 Main St., Northport; $20, brownpapertickets.com, 800-838-3006
Theatre Three opens its fall season with the world premiere of "Treasure Island: A Musical Adventure," with music and lyrics by Gary William Friedman and Will Holt, who previously collaborated on the Tony-nominated "The Me Nobody Knows." Starring Steve McCoy as Long John Silver, "Treasure Island" opens Sept. 15 at 412 Main St., Port Jefferson; theatrethree.com, 631-928-9100.