Editor’s note: This edition of your Week Ahead covers two weeks. Look for the next Globe magazine on July 9.
Wednesday, June 28
Former UN Secretary General Ban Ki-moon, who stepped down in December after completing his second five-year term, appears at the John F. Kennedy Library in Dorchester. He will discuss global issues ranging from the Paris Peace Accords to the Middle East and take questions from the audience. Free, reservations recommended. 6 p.m. jfklibrary.org
Friday, june 30
Groove into the night at the 20th Annual Dance Party in front of Cambridge City Hall. Part of Mass. Ave. will close to accommodate the expected flood of revelers, a live DJ will spin, and once the sun goes down (at 8:25 p.m.), the colorful lights go up. Free. 7 to 11 p.m. cambridgema.gov
Sunday, July 2
The 3d Annual Summer Boston Celtic Music Festival, at Club Passim in Cambridge, comes in three parts. First brunch, from 10 a.m. till 2 p.m. Then a free outdoor concert featuring young artists like Keltic Kids and the Rockport Celtic Duo. Finally, an indoor show with artists like fiddler Katie McNally. Free show starts at 2:30 p.m.; ticketed show starts at 7. Evening tickets $18, $10 Club Passim members and students. clubpassim.org/bcmfest
Saturday, July 8
Tony Award winner Idina Menzel, now better known as the voice of Elsa in Frozen, comes to Blue Hills Bank Pavilion. Menzel will perform songs from her 2016 album idina along with selections from her musical theater career (a showstopper from Wicked, perhaps?) and maybe even belt out a Disney favorite. 8 p.m. Tickets from $35. livenation.com
Saturday and Sunday, July 8-9
The first Boston Pizza Festival takes over City Hall Plaza. If all works out, you can watch the mayor of Naples, Italy, make a pizza with our own Marty Walsh. Snack on slices made in 30 handcrafted pizza ovens moved to the plaza for the occasion, take the kids to a dough-making class, and enjoy live music and entertainment. 11 a.m. both days. $15 general admission. bostonpizzafestival.comSHARE YOUR EVENT NEWS. Send information on Boston-area happenings at least three weeks in advance to firstname.lastname@example.org.