Last fall, four BlackBerry (BBRY) executives shared their musical talents with the world for the first time in a music video thanking BlackBerry app developers for their patience while waiting for the release of BlackBerry 10. Now that BlackBerry 10 has finally been released, the executives have decided to get the band back together to celebrate what has by many accounts been a successful launch for their new platform. The new song, which is to the tune of Etta James’ classic number “At Last,” happily informs listeners that “all the promise has come true” with the BlackBerry 10 launch, which has also seen the release of “two new devices” that are “good to go” and “complete with legendary keyboards.” The song also promotes BlackBerry 10 as “a new beginning and new start” that “is gonna be a blast.” The full video for the new song is posted below.