ISO: New summer jam

I'm in short sleeves once again.

Outside the library window and across the highway, people are biking and running along the lake. Yachts and sailboats come in and out of view while I vainly try to keep my attention on U.S. v. Florida East Coast Ry. Soon, finals will be over and it'll be time to have some fun, but what's summer fun without a definitive song to remember it by. Despite being an insufferable hipster (see below), I haven't kept up with the new releases.

Any suggestions?