Katy Perry gives "When I'm Gone" its live debut during opening night of Las Vegas residency

Yesterday (29 December) Katy Perry returned with a new Alesso collaboration titled "When I'm Gone", and as part of her 19-song set on the opening night of her PLAY Las Vegas residency, Perry performed the song for the first time as part of a mashup with "Walking On Air".

"When I'm Gone" marks Perry's first outing since covering The Beatles' "All You Need Is Love" in October.

When announcing the single earlier this month, Perry told fans to keep 10 January in mind, writing, "it will be the day im giving the KCs everything they want."