Tegan and Sara | Lollapalooza 2013

After having seven full-length albums under their belt, it’s safe to say that Tegan and Sara have earned the flexibility to experiment with their sound. Compared to previous releases, the Canadian duo’s latest album, Heartthrob, is undeniably the most mainstream to date, but definitely doesn't lack substance. The songwriting is still rock solid and heartfelt, and the music remains polished and dance-worthy. Longtime fans will still recognize the sisters’ signature sound while newcomers can find out what all of the well-deserved fuss is about. (Sunday, 4-5PM, Red Bull Select Stage)