Development studio Harmonix has just released a new DLC for "Rock Band 4."

According to an announcement from the studio, the latest content update for the game contains six new tracks from various famous artists.

The DLC was officially unveiled on Dec. 29 and each song costs $1.99. These include "Adventure of a Lifetime" from Coldplay, "On my Mind" by Ellie Goulding, "What do You Mean" by Justin Bieber, "Leave the Lights On" from Sam Hunt, "Thank God for Girls" from Weezer and "Drag Me Down" by One Direction.

Aside from details of the DLC, Harmonix also noted that the huge "Rock Band 4" bundle sale at GameStop has already started.

One of the bundle deals included in the sale is the package feature the copy of the game and a Fender Stratocaster Guitar controller for the Xbox One and PlayStation 4 consoles. This bundle costs $79.99, which is $20 cheaper than the same package offered during Black Friday event.

Another deal currently being offered by the video game retailer is the 'Rock Band 4' Band In-A-Box Bundle for Sony and Microsoft's consoles. This package features the game, a wireless drum set controller, the Fender Stratocaster guitar and a USB microphone. The original price of the bundle is $249.99 but for the sale, gamers can purchase it for only $199.99

"Rock Band 4" just came out in October of this year and it seems Harmonix has no plans of slowing down its support for the game. Aside from the DLCs and deals, the studio revealed earlier this month the other content updates that fans of the "Rock Band" series can expect for its latest installment.

According to Daniel Sussman, the project manager of the studio, Harmonix will release the Practice mode as well as a new set list feature for the game next year as a free update. The executive also updated fan regarding the possible online multiplayer game mode for "Rock Band 4."

Sussman noted that since creating this feature will not be easy, Harmonix wants to find out first what gamers are exactly looking for in a multiplayer setting.

"Adding [online multiplayer] is very much on the table but we're not yet sure where it fits in our roadmap," he wrote. "Part of our process includes taking your advice into consideration."

"Before we can deliver a feature as complex as online multiplayer, we would like to better understand what you want and find to be important," he added. "In an effort to drive that conversation forward, we'll be sending out a survey about online play shortly so you can provide feedback that helps direct our development efforts as we make decisions about what to do next."