Geez, this week is off to a great start. Colorful J-pop duo Her Ghost Friend are back with “Knock Knock,” an extremely playful number that finds producer DJ Obake treating sounds like gooey taffy. From the start, “Knock Knock” drips in samples of birds, scattered sounds and the titular phrase before segueing into a slightly more traditional structure. Still, Obake messes with pitch, bass sounds and Shinobu Ono’s voice twisted into various directions (at times sounding like it is drifting off into space). Yet there is also a bouncy pop number here, just one off-set by stuff that would seem out of place on an Oricon-charting single. Listen below, or download it here.