"Everytime". After the release of two compilation albums, Spears experienced personal struggles and her career went under hiatus. Her fifth studio album, Blackout, was released in 2007 and despite receiving little promotion, it spawned hits "Gimme More" and "Piece of Me". In 2008, her erratic behaviour and hospitalizations caused her to be placed in a conservatorship. The same year, her sixth studio album Circus was released, with the global chart-topping lead single "Womanizer".