The Going Out Guide recommends free things to do this week.

The District's annual celebration of the Fourth of July features marching bands, military and specialty units, floats, celebrity guests and more.

Saturday. 11:45 a.m. Constitution Avenue and Seventh Street. www.july4thparade.com.

This week in free concerts:

In celebration of the Fourth of July, this annual showcase features fireworks displays and live performances by local and celebrity acts. Headlining this year’s concert will be  Barry Manilow. Also performing during this year’s program will be Alabama, Nicole Scherzinger, principal pops conductor for the Baltimore and Indianapolis Symphony Jack Everly, the National Symphony Orchestra and others. Guests may bring food but alcoholic beverages will not be permitted.

Saturday. 8 p.m. U.S. Capitol, West Lawn, 100 Constitution Ave. NE. www.pbs.org/a-capitol-fourth.

Jazz vocalist and D.C. native Akua Allrich celebrates the release of her third studio album “Soul Singer,” which comes out Sunday and features her cover of “Can't Stand the Rain” by Ann Peebles.

Sunday. 6 p.m. Kennedy Center, Millennium Stage, 2700 F St. NW. 202-467-4600. www.kennedy-center.org.

This week in free movie screenings:

Grease

You know its songs; you know its stars. The classic 1978 musical starring Olivia Newton-John and John Travolta is screened as part of NoMa Summer Screen. Participating food trucks include Popped! Republic, Red Hook Lobster Pound, Healthy Fool and others.

Wednesday. 7 p.m. Storey Park, 1005 First St. NE. www.nomabid.org/noma-summer-screen.