Perfume has unleashed the short PV for its upcoming single "Sweet Refrain" that's scheduled to drop on November 27th.

"Sweet Refrain" is currently being used as the theme song for TV Asahi's drama 'Toshi Densetsu no Onna'. In the PV, the members make multiple appearances wearing black outfits.

Take a look above.

Source: natalie
Thanks to Julian Ross for the tip!