Photo: WENN.com

US pop sensation Ke$ha startled Tokyo commuters recently when she belted out her new single 'Die Young' during a journey on the city's public transport system. Watch the video below.

The impromptu performance was filmed as a teaser for the star's upcoming pop return, following on from the success of her debut album Animal, which spawned hits such as 'Tik Tok' and No.1 hit 'We R Who We R'.

The black and white video sees Ke$ha sat on the Tokyo underground before bursting into song - much to the surprise of fellow passengers. She then sings alone on the platform and as she travels out of the station on an escalator.

Ke$ha announced her comeback track at MTV VMAs earlier this month, telling reporters at the event that the track would be released before the end of September.

Ke$ha has previously hinted at a follow up to her 2010 debut ‘Animal’ and follow up EP ‘Cannibal’. The provocative singer spoke of a change of direction, “The first two records talked more about partying…but some songs on the new record are more personal and vulnerable.”

Having previously made some bold claims of an invention of a new sort of music ‘Cock Pop’, she identified,“You can hear more of the music I listen to when I'm lying in my bed. I'm not claiming that it's a rock record - but as long as it's f**king good, you can call it whatever you want. On this record, I said, 'Let's leave the tricks to a minimum and let me wail'."

Watch Ke$ha's 'Die Young' teaser below: