Obviously heavily influenced by Jay-Z (B-Day's lone guest, who shows up to drop two oddly weak cameos on his girlfriend's shit), her second album finds Ms. Knowles preoccupied with asserting how much plastic and platinum she possesses, and the boundless self-confidence it affords her. On Suga Mama, she'll buy you anything for that good lovin', and on Upgrade U, she'll invest in enhancing your life with material goods. Kitty Kat, her most aggressively 'sexy' song to date, is also her most painful -- Knowles mimics Marylin Monroe as she coos about leaving your bed due to neglect (the punchline: she'll be taking her vagina with her). Every producer but Scott Storch got invited to the B-Day party, so there's no shortage of guaranteed hits to keep the Jeffersons of urban pop atop that Billboard high-rise. Too bad only the icily sardonic Irreplaceable has any real weight or relevance.