Don't feel bad if you wagered Day26 -- a reality TV act with a dumb name and a lackluster debut -- would never see the light of day again. But if, as Diddy's pet idols learned, a lot can change in a day, what a difference a year can make! Forever is engrossing and sophisticated. Even the requisite trend-jockeying (guys, lay off the Auto-Tune, especially around its king. You will always sound like wimpy robots next to T-Pain) is tolerable next to the likes of "Girlfriend's" densely harmonized hook, the sunnily Stevie Wonder-esque "Then There's You" and "So Good," which lives up to its title.