You Wouldn't Like Me, 2004
Remember a time when you would tune into Grey's Anatomy week after week? When you couldn't choose between McDreamy and McSteamy? The series' music programming team were gems who introduced the likes of indie artists Tegan and Sara, Emiliana Torrini and Ingrid Michaelson to the mainstream. This particular track — from their record So Jealous — was used in season one.
"I felt you in my legs before I even met you"...what an opener. From their fifth studio record The Con — produced by Death Cab For Cutie guitarist Chris Walla — the duo tapped into a rockier sound with this experimental album.
Feel It In My Bones, 2009
The twins met Tiësto after the Dutch producer did a remix of Back In Your Head, and the three went on to collaborate for a full-on dance track. This was one of their first collaborations that involved the duo writing a song with another artist.
Everything is Awesome, 2014
Nominated for Best Original Song at the 2015 Oscars, their collaboration with Lonely Island for The Lego Movie was equal parts infectious, equal parts annoying — the hallmarks of a really good song, we think.
Marking their beginnings into pop territory with Heartthrob, this confused their early fans who weren't initially on board with their new direction. Joining Taylor Swift on her Red tour and Katy Perry on her Prismatic tour saw unlikely associations and a wider fanbase. They also tapped into the genius of producer Greg Kurstin — the same dude who went on to co-create Adele's Hello.