It's that time of year again: summertime! And of course, you know what that means: backyard parties, barbecues, squeezing into summer clothes you haven't worn in a year, and of course, listening to music poolside. Sometimes it can be hard to "set the mood" for summer with the odd weather we've been having lately, but for me, music always helps to give off those summer vibes. With that being said, here's 20 songs you can add to your 2018 summer playlist.