Stars of the Forties are back with this year's crop of nominees for the 37th annual Grammy Awards. Among the nominees announced today: Tony Bennett, 68-year-old crooner and a Generation X darling of late, received a nomination today for album of the year for his "MTV Unplugged." (He'll go up against "The 3 Tenors in Concert 1994," Eric Clapton's "From the Cradle," Bonnie Raitt's "Longing in Their Hearts," and Seal's self-titled album "Seal.") Frank Sinatra, whose first albumful of digitized duets with rock stars such as U2's Bono was released one week too late to qualify for last year's Grammys, earned a nomination for it in the category of best traditional pop vocal performance, where he'll go up against Bennett, Robert Flack, Willie Nelson and Barbra Streisand. Other luminaries on the short list for the Grammys -- to be presented March 1 in Los Angeles -- are five artists tied for most nominations with five apiece -- Babyface, Sheryl Crow, Elton John, Raitt and Bruce Springsteen.