A lot has changed in the last 10 years, especially when it comes to pop music. As the 2010s come to an end, we're reminiscing about the most notable tunes of the past decade, thanks to DJ Earworm's incredible mashup. Can we get this as a Spotify single, please? In 2010, Kesha's "Tik Tok" and Train's "Hey, Soul Sister" were all over Billboard's Top 100 chart. Nowadays, things are slightly different, with artists like Halsey, Lizzo, and Billie Eilish shaking things up. Listen to DJ Earworm's full mashup above — you might recognize this style from his viral "United States of Pop" videos.