Look up e.g. Karl Martin Sandberg, Shellback, Cheiron Studios, Dsign Music, The Kennel, EKKO, Cosmos, Merlin, ... the composers themselves are often contractors

Look up e.g. Karl Martin Sandberg, Shellback, Cheiron Studios, Dsign Music, The Kennel, EKKO, Cosmos, Merlin, ... the composers themselves are often contractors working with many of these, and in turn it gets sold to big labels often via e.g. Warner or Universal. Sweden, Norway and Denmark are the pop songwriting hotbed, and pop music is a very systemized industry. It also happens every year that the same pop song is licensed multiple times into different markets where it's given localized lyrics and sung by locally popular pop artists. I'm too scatter-brained to immediately think of a recent example, but check out e.g. "Hot Summer" existing in German and Korean girl band versions.