taytay adaImage Source: Mashable

Back in November, Taylor Swift released her best-selling sixth studio album "Reputation". Six months later, she rolled out a massive world tour which started in Glendale, Arizona and is expected to end in Tokyo this November. The latest stop of Taylor Swift's Reputation Stadium Tour was in Canada, the native home of legendary singer-songwriter Bryan Adams.

During Swift's performance in Toronto's Rogers Centre last weekend, the pop singer started to strum out the opening riff to Bryan Adams' seminal 1985 hit "Summer of '69". “It’s just one of my favorite songs ever written,” she said. Swift proceeded to sing the first verse of the song but to the surprise of the audience, Bryan Adams emerged from a trap door and continued to sing the next verse. Both singers were playing their guitars, singing the song the whole through, and obviously having a blast time performing together onstage.

The next day, Taylor Swift posted an Instagram clip of their performance and captioned it with "I didn’t even know Bryan was gonna be in town until last night and I asked him completely last minute if he wanted to come sing! “Pretty evident from the videos... that I’m FULLY LOSING IT with excitement, and I can’t thank Bryan Adams enough.

HONESTLY IT WAS JUST SO MUCH FUN ????☀️⭐️✨??????????? @bryanadams is so ?

A post shared by Taylor Swift (@taylorswift) on

Bryan Adams, who surprisingly has an Instagram account too, also shared photos and videos from his surprise appearance at Taylor Swift's concert.

Watch the full performance below.