action's nifty ­ Tony Bennett and Liza Minnelli urge Frank over the respective hurdles of "New York, New York" and "I've Got the World on a String." And the bizarre sound of Bono scat-crooning (and making like Bowie) on "I've Got You Under My Skin" is, um, arresting. Too often, however, such guests as Gloria Estefan, Anita Baker, Julio Iglesias and others overcompensate for sharing a mike with God by going nuts. With Kenny G sweetly accompanying, Frank's real moment is "All the Way/One for My Baby (and One More for the Road)": This is the emotion behind the Voice that once made galaxies swing.

Safer but stronger, Tony Bennett's "Steppin' Out" finds him reviving Gershwin, Cole Porter, Jerome Kern and Irvi