Will Smith Has 'Sumthin' For Eminem' On New LP, Due In March

Rapper/actor calls Lost and Found a 'departure' from his previous albums.

Will Smith, known for shirking rhymes about bling and violence for more upbeat messages, is using his new album to prove he's got a tough side, too.

The rapper/actor is releasing his fourth solo album, Lost and Found, on March 29, featuring the track "Mr. Nice Guy," about how people mistake him for being soft. And according to a statement by his spokesperson, Smith has "sumthin' for Eminem" in the song.

The album, which Smith calls a "departure" from his previous albums, which include Born to Reign (2002), Willenium (1999) and Big Willie Style (1997), will be led by the single "Switch."

The track is "a snapshot of my life," Smith said in a statement. "It's the most in-depth, revealing writing that I've done in my career."

Also included on the LP are collaborations with longtime partner Jazzy Jeff (with whom Smith recorded five albums as DJ Jazzy Jeff & the Fresh Prince), Mary J. Blige, Robin Thicke, Timbaland and Snoop Dogg, who worked with Smith on the track "Pump Ya Brakes."

Smith, who started laying down tracks for the album in 2003 and ultimately recorded more than 50 songs, said that the new album is best described as old-school retro hip-hop, and that the music is more serious than in the past, but is still just as fun.

With his latest feature film, "Hitch," having just debuted in theaters at #1 (see "Love Beats Hate As 'Hitch' KO's 'Boogeyman' "), Smith will take a break from acting for the next six to eight months to focus on his music.