Harmonix's grand-parent company, Viacom, announced today as part of its Q1 earnings that Rock Band has shipped three million "bundled units." GameDaily reports that the company also stated that Harmonix has had over 10 million songs downloaded for the game.

The last report we had was that Harmonix hit the six million DLC song mark in mid-March, which means the new music store apparently did help accelerate sales. Viacom's CEO said that Rock Band is emerging as a valuable long-term franchise and he expects further success from the Wii and European launches.

This article was originally published on Joystiq.

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