Mrs. GREEN APPLE has revealed the music video for their new song "A Posteriori," a track from their sixth album, POPS, which was released on September 30.

"A Posteriori" incorporates an unusual time signature that is described as challenging both to play and to listen to. Its title comes from the Latin term meaning "from what comes after" and serves as a counterpart to "A Priori," a song included in the group's 2018 single "Ao to Natsu."

The music video was created without the use of CG, but uses flashing lights and camera work to create a contrast between light and darkness. Due to an intense sequence of flashing lights near the end of the video, it cannot be broadcast on terrestrial television in Japan.