Nostalgia is a dangerous thing. In the wrong hands, it can be an outlet for excessive sentimentality and out-and-out kitsch.

In the right hands, however, it can be a healthy look at the past, an appreciation of what has gone before that doesn't dogmatically reject the present.

The Captains, a rock band from Sendai dedicated to reviving the glories of Japan's Group Sounds era, fall into the latter category.