Celebrate Brooklyn, one of the great reasons to stay in Brooklyn during the summer months, is presenting The Head and the Heart on Friday night at 7:30.

A Seattle band, the group formed in the summer of 2009 is known for its luscious vocal harmonies and swelling orchestral folk. I don’t know their music but the picture to the left has a decidedly Incredible String Band vibe to it.

Also playing on Friday, Lost in the Trees, who are said to take the listener on a sonic journey that includes stops at American folk melodies, pop and symphonic sound exploration. Sounds like a nice ride.

7:30 at the bandshell. You know the drill.

There’s an “after-party” for the show at Freddy’s Bar, which is now on Fifth Avenue in Park Slope.