If summer wasn't already almost over*, I would say this upcoming album from Roosevelt - "Young Romance," to be released September 28th - would be *the* summer album. It's lush, retro but fresh, and innately joyful. Try to not listen to this jam (featuring noneother than Washed Out, who sounds right at home) and imagine yourself sitting poolside, enjoying a cool breeze on your skin.
Roosevelt do deserve your time and attention. His remix of Rhye's "Summer Days" is my personal favorite. Try to listen to it and not get a little bit pregnant.
*If you live in Phoenix it'll be summer until you die; you are welcome!