Activision announced earlier in 2011 that it was mothballing its music franchises Guitar Hero and DJ Hero. While this was disappointing to FreeStyleGames, the makers of the DJ Hero games, since they were planning on inducing an expert mode in DJ Hero 3, where players could use two turn-table simultaneously for an enhanced challenge.
“We’re going to have to take a real shift in thinking how music gets licensed, because that’s the real blocker at the moment,” said creative director Jamie Jackson, who is working on another project now.
Source: Edge {link no longer active}