“I wanna be myself, but does the world really need her?” Nelly Furtado wonders in a moment of self-doubt on her duet with the Portuguese-Canadian singer Juanes, “Te Busque.” Loose, that song’s home and the singer-songwriter’s third album, answered by proving her more welcome than ever in the pop sphere. Laying claim to the hip-hop she loved as a kid while also following in the trend-hopping prints of Madonna, Furtado made her most fully integrated music yet. Two monster singles, “Maneater” and “Promiscuous,” allowed her naughty-girl side full expression, while ceding much musical control to producer/guest rapper Timbaland. Upping the sexual ante of “Promiscuous” while carrying through the faux-New Wave promise of “Maneater,” “Glow” is another highlight. Even tracks such as “In God’s Hands,” which are closer to the soft-pop of Furtado’s Whoa, Nelly!, find their home here.