Sweden is celebrating its impressive contribution to the World of Pop Music by releasing a set of postage stamps. Robyn, Avicii, and Max Martin, along with First Aid Kit and Seinabo Sei, have each gotten their own stamps — which weirdly resemble the sketchings of zealous fans. Or maybe this is just what stamps in Sweden look like. [Googles “ABBA stamp.”] This is what stamps in Sweden look like. The stamps will appear in Sweden on January 15, so send us a postcard sometime, won’t you?