US /ˈɛlvɪs hæz lɛft ðə ˈbɪldɪŋ/
・UK /ˈelvɪs hæz left ðə ˈbɪldɪŋ/
Elvis has left the building.
So, finally, the concert organizers would have to come onto the stage and say to the crowd, Elvis has left the building, meaning he's not even here.
Christy, Elvis has left the building.
Christy, Elvis has left the building.