It’s pretty easy
Harmonix has finally added in the ability to bring over every track from Rock Band 3 into the newest iteration. Yep, that’s every track, and despite the import licensing issues in the past, all 83 songs are good to go. Provided that you own the game in the same console family, you can transfer them over with a fairly simple process that costs $14.99.
Just boot up Rock Band 4, go to the “Get More Songs” section, and select exports. From there, you’ll find an option for Rock Band 3, and it will authenticate. On Xbox One everything will instantly load, but on PS4 you’ll have to manually re-download every song. It’s all listed there so you don’t have to hunt, but it’s tedious. The entire process took me roughly 15 seconds to do, from start up to queuing all the songs. I hope the first two games and LEGO Rock Band are this easy.
So yeah, enjoy your Rock Band 3 songs, sans keyboard (RIP), and try them on Brutal Mode.
