Britney Spears canceled her summer tour yesterday, citing a knee injury she suffered during a recent video shoot. The 22-year-old singer underwent arthroscopic surgery and will need at least two months to recuperate, according to her record label. The North American leg of the tour was set to begin June 22 in Hartford, Conn. . . .

But wait, there's more. (Or perhaps less.) Courtney Love has postponed her upcoming tour (including a June 29 stop at Nation) just days before it was set to begin. A Love spokesperson told Billboard.com that the singer's ongoing legal issues were to blame for the delay. Love faces three pending trials, plus a promised stint in rehab as part of a plea agreement in a separate matter. . . .

Warner Music Group has agreed to buy Madonna out of her share of Maverick Records, the label she co-founded over a decade ago. The agreement marks the end of a bitter legal battle between the singer and the music conglomerate -- which owned 40 percent of Maverick -- over management and profit issues. The deal does not affect Madonna's own contract with the Warner Bros. record label, which is part of Warner Music. . . .

James Brown told prosecutors he would forgo a jury trial and not contest a domestic-violence charge related to a January incident in which the 71-year old singer was arrested and charged with pushing his wife, Tommie Rae Hynie, to the floor and threatening to kill her. Brown's lawyer said the move meant the same as being convicted but that the singer "does not admit to being guilty of this crime." . . .

T-Boz (real name Tionne Tenese Watkins Rolison) of the female R&B group TLC has filed for divorce from her husband, rapper Mack 10 (Dedrick D-Mon Rolison), saying he committed adultery and threatened to kill her. The singer also requested a restraining order against her husband on June 8, citing a history of violent threats.

-- Compiled by K. Wilcox

from Web and wire reports