Michelle Branch and Jessica Harp, aka the Wreckers, will be putting their work as a duo on hold later this year to pursue solo projects.

In 2004, Branch took a break from her successful solo career to team with friend and touring backup singer Harp to form the Wreckers. Previous to the Branch collaboration, Harp had been working as a singer/songwriter in Nashville. The duo debuted in autumn 2004, performing "Good Kind" on the WB teen drama "One Tree Hill."

Their album, "Stand Still, Look Pretty," (Maverick/Warner Bros.) has sold more than 780,000 copies in the United States, according to Nielsen SoundScan. The duo has released three singles, the first of which, "Leave The Pieces," spent two weeks at No. 1 on Hot Country Songs. The second single, "My, Oh My" reached the top 10 while the third single, "Tennessee," peaked at No. 33 in June.

Branch and Harp's solo records will be released via Warner Bros., according to a spokesperson.

Harp told the Adrian, Mich., Daily Telegram that it's too early to say whether more Wreckers albums are in store. Their next step will be to work on the individual projects, she said, but after that, they'll be flying by the seat of their pants.

"This whole project just sort of happened on a whim," Harp added.

Harp says that she has already written some of the songs for her next album. "As soon as I possibly can, I'll be getting into the studio," she told the paper.

Harp and Branch are touring with Keith Urban for the rest of the year.