Watch: Halsey performs pop song mash-up in NZ.

While in New Zealand (for the very first time!) this week, Halsey performed an exclusive acoustic showcase in Auckland for some lucky fans, during which she performed a mash-up of several pop classics - including Fleetwood Mac’s 'Dreams', Katy Perry’s 'Teenage Dream', Taylor Swift’s 'You Belong With Me', Fountain Of Wayne’s 'Stacy’s Mom', Kesha’s 'Tik Tok', and her own song ’Bad At Love'.

Watch video footage of the mash-up below...

P.S. This also happened: