With a huge hit featuring Britney Spears and his latest single alongside Justin Bieber, will.i.am is finally ready to unleash his long-awaited solo album. And if the guest features are anything to go by, it will be worth the wait.

#willpower, the Black Eyed Peas frontman’s fourth solo album will arrive April 23. It will, of course, feature "Scream & Shout", his Spears collab, and "#thatPOWER" the Bieber feature. Diddy, Lil Wayne, Waka Flocka Flame and Hit-Boy—who all appear on the "Scream & Shout" remix—will also appear, most likely, via the remix.

The rapper boasts an impressive lineup on the album, including Chris Brown, Miley Cyrus, Skylar Grey, Juicy J and Eva Simons. He'll also reunite with BEP member apl.de.ap on a track—though no Fergie or Taboo.

Eight-year-old rapper Baby Kaely, who joined up with will.i.am for a tribute to the Sandy Hook Elementary shooting, is also featured, along with popular K-pop act 2NE1. Will's rumored to be producing the latter outfit’s debut English album and this may be the first taste of what’s to come.

Job well done, Will. We’re definitely intrigued to see what you’ve cooked up this time.