To mark the 20th anniversary of their final studio album In Utero, Nirvana have released a teaser in the form of a bizarre 30 second video from  1993, which involves Cobain, Grohl and Novoselic dressed as women, getting birthing lessons.

In an interview with Rolling Stone, Cobain stated that he wanted the album to showcase the band’s extremes, and said “it won’t be as one-dimensional as Nevermind.” In Utero was to be full of rawer sounds, incorporating the essence of grunge.

The albums Bleach and Nevermind also recieved the same treatment, with deluxe packages of the albums released on their respective 20th anniversaries. The reissues were released with bonus tracks, however Nirvana have not announced what bonus tracks In Utero will have.

The reissue is set to be released in September.