7Days: Regional arts and entertainment, by Michael Harrington

Sunday

Sound and vision Composer and pianist Leonardo Le San and the dance troupe Ballet 180 teamed up to create Hybrid, a meditation on technological production and the body. The program goes on at the Painted Bride Art Center, 230 Vine St., at 3 and 5 p.m. Sunday. Tickets are $30; $15 students. Call 215-925-9914.

Go for baroque The baroque orchestra Tempesta di Mare, with soprano Rosa Lamoreaux as guest, plays works by Nicolas Bernier, François Couperin, Jacques Morel, Jean-Féry Rebel, and Thomas-Louis Bourgeois at 4 p.m. at the Presbyterian Church of Chestnut Hill, 8855 Germantown Ave. Tickets are $24 and $34. Call 215-755-8776.

Monday

Lest we forget In Belgium on April 22, 1915, in the second battle of Ypres, chlorine gas was used for the first time, killing 5,000 soldiers in their trenches in 10 minutes' time. A century later, the horrors of the Great War still resonate, while terror and brutality persist and surround us. But still we sing. Tenor Ian Bostridge explores the music and poetry of the first world war in songs by Ivor Gurney, Mahler, Lehar, and Benjamin Britten at 7:30 p.m. at the McCarter Theatre Center's Matthews Stage, 91 University Place, Princeton. Tickets are $25 to $54. Call 609-258-2787.

Tuesday

True detective In Yi'nan Diao's bleak 2014 thriller Black Coal, Thin Ice, a disgraced ex-cop gets back together with his former partner to reinvestigate the case that ended their careers, after a similar series of murders begins in northern China, and what the detective finds puts him in mortal danger. The film screens at 7:30 p.m. at the PFS Theater at the Roxy, 1600 N. Fifth St. Tickets are $12. Call 267-239-2941.

Wednesday

Good folk Singer-songwriter Griffin House plays his folk-pop gems at 8 p.m. at World Cafe Live, 3025 Walnut St. Tickets are $19. Call 215-222-1400.

Thursday

New music The intriguing local composer and saxophonist Bhob Rainey plays solo works on a bill also featuring two duos - saxophonist Buck Hammerstein and trumpeter Clear River Chapaukee from Boston, and Philly percussionist Flandrew Fleisenberg and trombonist Connor Przybyszewski - at 7:30 p.m. at the Random Tea Room & Curiosity Shop, 713 N. Fourth St. Tickets are $10. Call 267-639-2442.

Dead, man This summer, the surviving members of the Grateful Dead will gather to mark the group's 50th anniversary with farewell concerts in Santa Clara, Calif., and Chicago (we're waiting on a miracle that they will add one last set in San Francisco's Golden Gate Park). On their long, strange trip, the iconic ensemble was an essential part of 1960s counterculture and arguably created an aethestic eco-system all their own with their deceptively loose-sounding yet complex jams and subculture of devoted fans. To celebrate the band, Chris Kasper plays American Beauty and Mason Porter performs Workingman's Dead, two 1970 classics, in their entirety at 8 p.m. at Ardmore Music Hall, 23 E. Lancaster Ave., Ardmore. Tickets are $14. Call 610-649-8389.

Chamber music Pianist Shai Wosner plays works by Schubert, Chopin, Ligeti, Haydn, and Beethoven at the American Philosophical Society, 427 Chestnut St., at 8 p.m. Friday. Tickets are $24. Call 215-569-8080.

Out of the east The Sadanam Balakrishnan Troupe performs the Indian traditional dance form of Kathakali, a mix of ballet, opera, masque, and pantomime, at the Annenberg Center, 3680 Walnut St., at 7 p.m. Saturday. Tickets are $20 to $55. Call 215-898-3900.