<human>:  What songs were at the top of the Billboard charts in the summer of 2020?
<bot>: The top songs of the summer of 2020 on the Billboard charts included "Blinding Lights" by The Weeknd, "Savage" by Megan Thee Stallion featuring Beyoncé, "rockstar" by DaBaby featuring Roddy Rich, "Circles" by Post Malone, "The Box" by Roddy Rich, "Say So" by Doja Cat, "truth Hurts" by Lizzo, and "Cardigan" by Taylor Swift.