Nautilus on 25 March 2016
Im not sure if its Rock Band 4 or if it is Guitar Hero Live, but for you to get every song in one of the two, you need to spend a total of 2500 dollars.Quite a small fortune.
My (locked) thread about how difficulty should be a decision for the developers, not the gamers.
https://gamrconnect.vgchartz.com/thread.php?id=241866&page=1
