Shirayuri is a group formed just after the second world war. They sing 1940s and 1950s songs from Ishigaki, in the Shiraho town style, the hot bed of the local music scene, playing western instruments but sounding sort of Okinawan anyway. The members are now in their 70s, and this documentary film is about their trip to Tokyo for a concert. There they meet the Boom, Okinawan musician Takashi Hirayasu and others in the big smoke. Okay, it's billed as the Okinawan Buena Vista, and it is, sort of. Hugely enjoyable.