Promo copies were sent by labels to journalists, radio stations and shops before an album's release. My collection includes a German Metal Blade promo CD for each early album, from Once Sent from the Golden Hall to Twilight of the Thunder God, a few US promo samplers, a radio/club promo single for With Oden on Our Side, and even the uncut versions of the Church Of Vinyl shaped picture discs.
My favourites: the Japanese promo CDs. With their obi strips and sometimes a bonus DVD, they're true gems, and all the more special because my husband found them for me! The list keeps growing…