What is the Free Songs Pack?
The Free Song Pack is a regional song pack, linked to your version of the game. It grants you access to all your local songs and all game modes. This Pack is needed to play in Career mode and in the Local stage of the LS FEST.
If you bought the physical edition of the game, you need to manually active your Free Song Pack. Get the download code present inside the box of the game, then proceed to the Store screen accessible from the main menu.
Press the button present at the bottom of the Store screen to proceed to the Nintendo eShop, PlayStation Store or Xbox Store. Here you can enter your download code, which will start the Free Songs Pack download. Once the download is over, the Pack will be installed automatically and immediately grant you access to your content.