WHAT The Islip Arts Council and the Long Island Philharmonic "Salutes the Armed Forces of the USA" in the annual free concert at Heckscher State Park Saturday night, capped by a fireworks spectacle set to John Philip Sousa's "Stars and Stripes Forever." This is the 33rd year of the free show that typically draws 20,000 or more fans of classical music and pyrotechnics. It was canceled two years ago by a State Senate impasse that bottled up supporting funds. This year's concert has been on solid financial footing for months, according to organizers. "The plans for this event began in early fall 2010," says arts council director Lynda Moran, "and were really cemented when we were awarded an omnibus grant through the Suffolk County Legislature." Philharmonic music director David Stewart Wiley conducts the orchestra in the second of its five free outdoor concerts this summer. Music begins around 8 p.m., but don't even think about arriving at the last minute. Entry to the park closes at 7:30. Bring a blanket or a lawn chair and pack a picnic supper if you like. Fireworks start after dark, a little after 9 p.m.
WHEN | WHERE Saturday night at Heckscher State Park, East Islip
INFO Concert is free, $10 parking fee if you arrive before 5 p.m., $10 suggested donation thereafter; islipartscouncil.org, 631-224-5420, details on the park at nysparks.state.ny.us
Theater: Python plays Patchogue
WHAT Gateway Playhouse presents the Long Island premiere of "Monty Python's Spamalot" in Patchogue. "Spamalot," which its creators -- principally Eric Idle -- admit is a musical "lovingly ripped off from the movie," won the Tony Award for best musical in 2005. A very loose takeoff on the legend of King Arthur's court, "Spamalot" was based on the 1975 hit film "Monty Python and the Holy Grail," performed by the outrageously inventive British comedy troupe. (Some would say silly, but there you have the split among Monty Python fans and detractors.) "Spamalot" is the only Gateway production this summer in the 1,200-seat Patchogue Theatre instead of its 600-seat Bellport home.
WHEN | WHERE Friday, Tuesday and Wednesday nights at 8, Saturday at 3 and 8:30 p.m., Sunday at 7 p.m., Thursday at 2 and 8 p.m., through July 30 at the Patchogue Theatre for the Performing Arts, 71 E. Main St.
INFO $52-$58; gatewayplayhouse .com, 631-286-1133
Art: A good draw
WHAT At this stage in his seven-decade career, Gerson Leiber -- friends call him Gus -- could fill an entire museum. And so he has. His own. The Leiber Museum in East Hampton, though, is more than a vanity statement. As art critic Phyllis Braff writes in the catalog essay for his new exhibition, "Drawings Drawings Drawings": "An edginess associated with experiment runs through this entire drawing collection," numbering about 200 works Leiber created since 2009. Charcoal plays a dominant role in these drawings, though he expands his black-on-white vision through oil-sticks and colored pencils. Leiber and his wife, Judith, built their museum in 2005. Past shows have featured their personal collection of antique Chinese porcelains and rare Japanese prints. Handbags designed by Judith Leiber are also on permanent display.
WHEN | WHERE 1 to 4 p.m. weekends through Labor Day, 446 Old Stone Hwy., East Hampton
INFO Free; leibermuseum .org, 631-329-3288 -- Steve Parks