You can buy these one by one in the Rock Band Music Store.
The Rock Band song export key is a crucial component in the song export process. This key, also known as the "export key" or "song key," is a unique code that unlocks the export feature, allowing players to share their custom songs. Without the Rock Band song export key, players would be unable to export their creations, severely limiting the sharing and distribution of custom content. rock band song export key
If you previously purchased a key, you can still access your songs: You can buy these one by one in the Rock Band Music Store
When the keys were active, the process followed a specific path. For Rock Band 1, players would buy a "Transfer Key," and the game would copy the files directly from the disc to the console's hard drive. For Rock Band 2 and later titles, the process moved to the cloud. Players would enter a unique code found on the back of the manual into the game’s website or console store, which then granted them a digital entitlement to download a "Export Pack" containing those songs. Without the Rock Band song export key, players