Final Sword's developers say they believed the game's stolen Zelda music was licensed properly

Over the weekend, Switch owners who checked out Final Sword noticed that the game was using Zelda's Lullaby from the Legend of Zelda series. Nintendo obviously doesn't license out these tracks for other developers to use, so players figured the music was stolen. According to HUP Games, they thought they went about music licensing the proper way.

In an interview with Automaton-Media, members of the HUP Games team said they purchased the background music for use in their game. They thought they had the appropriate license to include it, but that obviously wasn't the case. HUP explained the situation to Nintendo, and is planning to swap in new music in order to re-release the game.

If HUP did indeed purchase a license for this music, they obviously made the deal with a shady organization who never really had the rights to begin with. That said, I find it quite surprising that not a single member of the dev team had ever heard that tune before. Do you think HUP made an honest mistake, or they're just covering their tracks?