With little details spreading here and there about a portable Rock Band title, Harmonix and MTV Games recently spilled the beans on the exclusive title for the PSP. A handheld iteration of the successful rythm game has officially been unplugged and EA has supplied us with the details.

The game will be co-developed with Harmonix and Backbone Entertainment as the game will be releasing simultaneously in Europe and North America on June 9th. This is an exclusive for the PSP and will retail for a price of $39.99 in North America.

“Rock Band Unplugged reinvents band gameplay while staying true to the authentic feel of the Rock Band console games,” said Bob Picunko, Senior Vice President of Electronic Games for MTV Games. “Harmonix delivers innovation with every game they develop and we are excited to continue our long-list of industry firsts with the Rock Band in-gamewireless music store on the PSP system.”

You will be taking the reigns of the full band experience with the help of your fingertips. Taking obvious inspiration from Rock Band and Rock Band 2, Unplugged will contain the full Rock Band experience including warm-ups, World Tour, Band Survival along with full character customization. With over 40 master recordings which will include 9 brand new songs for a limited time. The game will also be taking advantage of it's wireless capabilities  by providing an in-game store where you'll be able to download new tracks and having an option to do the same on the Playstation Store on your PC. Here is a list of those 9 exclusive tracks...

• 3 Doors Down- "Kryptonite"
• AFI- "Miss Murder"
• Alice in Chains- "Would?"
• Audioslave- "Gasoline"
• Black Tide- "Show Me the Way"
• Blink 182- "What's My Age Again"
• Freezepop- "Less Talk More Rokk"
• Jackson 5- "ABC"
• Tenacious D- "Rock Your Socks"

Read more below...and check out the other 3 screenshots.

To commemorate the debut of the Rock Band franchise on the PSP system, Sony Computer Entertainment America plans to release a limited edition Rock Band branded PSP Entertainment Pack at the launch of Rock Band Unplugged. The bundle will include the game, a voucher to download Paramount Pictures’ School of Rock from PlayStation®Store, a 4GB Memory Stick PRO Duo™, and a “Piano Black” PSP system. The Rock Band Entertainment Pack will be available in North America for $199.99 (MSRP).

Rock Band is the ultimate platform for music fans and gamers to interact with music like never before. The game challenges players to put together a band and tour for fame and fortune – all while learning to master lead/bass guitar, drums and vocals. Featuring the most master recordings of any music game ever by the world’s biggest rock artists, Rock Band includes tracks that span every genre of rock ranging from alternative and classic rock, to heavy metal and punk.