On Friday night, Taylor Swift may have "gone mad" in Toronto teasing the highly anticipated rerecord of her sixth album to the 49,000 fans in the Rogers Centre with a triple song mashup on the piano.

There is nothing Taylor Swift does better than a surprise song. And fans at the Nov. 21 Eras Tour concert in Toronto—marking the Grammy winner’s second weekend in the city—were treated to a particularly special mashup of two songs that fans have long believed to be about one of Taylor’s famous exes,

Taylor has openly talked about her breakup with Joe in the past, including during a 2008 appearance on The Ellen DeGeneres Show. She shared how their relationship ended abruptly over a phone call that lasted just 27 seconds.