Halsey has announced her upcoming confessional concept album, The Great Impersonator, revealing that she once believed it might be the final record she’d ever create.

The pop artist, who goes by she/they, released a clip on Tuesday, August 27, that spans decades and teases her upcoming "confessional concept album."

Halsey admits, "I really thought this album would be the last one I ever made," as the teaser begins to play.

The video then transitions to a number of films in which the 29-year-old singer of "You Should Be Sad" dons vintage attire and hairstyles while thinking back to their potential careers from earlier eras.

“What if I debuted in the early 2000s? The ’90s? The ’80s? The ’70s?” she said in voiceover, adding, “Am I still Halsey every time? In every timeline, do I still get sick? Do I become a mom?”

In the visual, Halsey cosplays artists representative of different eras including David Bowie and Britney Spears — the latter of whom they interpolated in their recent single Lucky.

Additionally, the teaser includes short clips from the three-time Grammy nominee's unreleased compositions that evoke the sound of several musical eras.

Would you be proud to leave this person behind if it all ended right now? Do you even recognise it? Halsey ends.

The teaser concludes with the subtitle, "'The Great Impersonator' A Confessional Concept Album by Halsey."