Watch: Taylor Swift Performs ‘This Is What You Came For’ & Makes It Clear Why Calvin Gave the Song to Rihanna [Video]

Taylor Swift may have co-written “This Is What You Came For” with then-boyfriend Calvin Harris, but it’s clear why Calvin & co. decided to let Rihanna handle the vocals.

Taylor performed at the Formula 1 U.S. Grand Prix in Austin Saturday night and covered the song for the first time…and well…this was NOT what we came for.

Check it out below.