Actress Jennifer Lopez's debut album fails in its attempt to provide a worthy musical backdrop to her much-discussed diva-esque image. Over the course of 13 songs, On the 6 displays barely a glimmer of the verve, poise, and sensuality of her screen performances in the likes of Out of Sight. With little vocal talent to rely on, Lopez generally seems content to ape Madonna's middle register like any happy radio listener. Similarly, several of the tracks here seem too rooted in the Latin-lite clichés of "La Isla Bonita." With practice--more Lopez CDs will surely follow in the wake of 6's success--the star might develop into a singer worth reckoning with, but for now she stands as a wonderful actress and a musical artist with an unengaging album to her name.