What is this? I’ve stepped into the bull riff: both a line from Still Flyin’s new song “Bull Riff” and a fitting sentiment for any fan of the San Francisco band flummoxed by its new direction. The many-member collective of musically adept goofballs made its mark early on playing what frontman and mastermind Sean Rawls deemed “joke reggae” across a pair of EPs, then progressed into a purer form of pop for its debut full-length, then — and this is where the shock comes — went, for a few songs at least, straight synth like Eighties band Talk Talk or even Duran Duran, no reggae rhythm to be found. There are even remixes. What, exactly, is this?