Rock Band is one of the most popular music game franchises out there, winning over quite a lot of fans through its innovative gameplay and really solid lineup of songs. It is engaged in a bitter fight with its arch rival, Guitar Hero, and, even though it doesn't have the same financial power as Activision, Harmonix, the company behind Rock Band, is investing quite a lot in the two games in the series.

We have reported a few days ago about the fact that the Wii version of the popular Rock Band 2 title would be launched just before Christmas, and, as a special token of appreciation, it would receive 20 songs free of charge, which would take the number of tracks available up to a pretty hefty 104.

But, due to some problems with the testing process, these 20 free songs won't be released just yet, as the Harmonix team still needs to verify that all of these tracks will perform as expected in Rock Band 2. In an announcement on the official forum of Rock Band, a community manager announced that the team was working to deliver the 20 free songs, plus 30 new songs from the Rock Band DLC (Downloadable Content) platform as early as possible.

“We’ve noticed a bit of confusion on the forums regarding add-on content for Rock Band 2 on the Wii. The downloadable content is in the final testing stages and Harmonix is working as fast as possible to deliver the 20 free bonus songs for Rock Band 2, plus an additional 30 songs from the Rock Band DLC Catalog to fans as early in 2009 as possible. As soon as we can announce a firm date, you can be sure the Rock Band community will be the first to know.”

Even though the game was released a few days before Christmas, it was sure to be in high demand, and it's really nice to see that the team at Harmonix is working hard on delivering extra content to the Nintendo Wii owners.