1. Clearwater’s Great Hudson River Revival, June 15-16 Rock out all weekend long at the country’s oldest music and environmental festival, founded by folk music legend Pete Seeger in the 1960s. Dozens of artists will gather at Croton Point Park in Croton-on-Hudson to perform a mix of rock, blues, dance, funk, klezmer, zydeco and more. This year, the lineup includes Kris Kristofferson, Judy Collins, Tom Chapin, Sharon Jones & the Dap-Kings, Dan Zanes, the Klezmatics, Martha Redbone Roots Project, Son Volt, the David Bromberg Quartet, Toshi Reagon & BIGLovely and Jason Isbell. The 94-year-old Seeger is scheduled to take the stage, too, with longtime friend and fellow singer-songwriter Lorre Wyatt. Proceeds go to Hudson River Sloop Clearwater, a nonprofit dedicated to environmental research, education and advocacy efforts to protect the Hudson River and communities in the river valley. Ticket prices in advance for Clearwater nonmembers are $80; a weekend pass with camping is $200. Kids 12 and under admitted free. 845-236-5596, www.clearwater festival.org.