In her first concert for 2016, Taylor Swift decided to shake things up a little with a piano rendition of Calvin Harris's hit song "This Is What You Came For".
Taylor co-wrote the song with her ex, a fact that was only revealed after their very public breakup.
"I’ve never played this song live before," she told the crowd, before launching into it.
Needless to say, fans were SHOOK.
Although not everyone was thrilled.
Either way, though, you gotta admire that subtle shade.