Boston-based pop-rock group Letters to Cleo have called it quits so that its members can work on their own individual projects. The breakup is amicable, and the band members will continue to work together on a television cartoon project, according to their manager.

Letters to Cleo manager Michael Creamer said that lead singer Kay Hanley and guitarist Michael Eisenstein--a married couple--are in the process of relocating to L.A., where Hanley is currently recording vocals for an upcoming motion picture version of the popular '70s cartoon "Josie and the Pussycats."

The entire band, meanwhile, will continue to record music together for "Generation O," an animated series scheduled to premiere this fall on the WB television network, Creamer said.

Letters to Cleo got its start on the Boston club circuit in the late '80s. The group released its first album "Aurora Gory Alice" in 1993. That album's song "Here and Now" gained the band widespread exposure when it was used repeatedly on the television program "Melrose Place," and was also featured on that show's 1995 soundtrack album.

The band's last release was the 1997 album "Go." Creamer said the band had been writing and recording new material before deciding to break up, but he did not know if the music recorded during those sessions would ever be released.

Letters To Cleo played its last show on May 4 in Boston at a benefit for local DJ Mikey Dee.