'Strange Euphoria,' the forthcoming box set from Heart is set for release on June 5, just in time for the band's summer touring season.

The box set will contain 50 tracks featuring a mixture of previously unreleased demos and rarities (including hopefully, the long-desired original versions of the 'Magazine' album tracks), live tracks and of course, their chart-topping hits.

The four disc set will also include a DVD of the rare 1976 television performance, plus new track-by-track commentary from Ann and Nancy Wilson.

Heart's summer tour schedule kicks off officially on June 29 in St. Paul, Minnesota and will roll through September with additional dates likely in conjunction with the new record.