Keyshia Cole's latest single, currently rising on the Billboard Hot 100 and the Hot R&B/Hip-Hop Songs chart, marks a comeback of sorts for fellow R&B vocalist Monica. The pair's soulful voices bounce off one another in a similar spirit to Monica's "The Boy Is Mine" duet with Brandy a decade ago. Here, though, instead of competing, the singers are in harmony. The vocals float over a moderate production by "Toxic" Donald Alford and Ron Fair, who allow the duo's emotive singing to shine above everything else. And the songwriting is accomplished, bearing a simplicity that evokes Babyface's R&B ballad staples of the '90s. As Cole and Monica exchange dialogue about the somewhat uncommon theme of a woman as the protector, they can trust they've scored a hit.