The Foo Fighters are making plans for their first acoustic tour, which will tentatively get underway in May. The trek will focus on the less aggressive material found on the second disc of 2005's "In

The Foo Fighters are making plans for their first acoustic tour, which will tentatively get underway in May. The trek will focus on the less aggressive material found on the second disc of 2005's "In Your Honor," which debuted at No. 2 on The Billboard 200 and has sold 1.17 million copies in the United States, according to Nielsen SoundScan.

The band will wrap its electric performances in support of the album tonight (Feb. 2) in Hamburg and Monday in Stockholm.

For the acoustic dates, the Foos have signed up an auxiliary backing band featuring multi-instrumentalist Petra Haden, pianist Rami Jaffee and percussionist Drew Hester. Haden and Jaffee both guested on "In Your Honor"; Haden's Foo Fighters association dates back a decade, when her band, that dog, toured with the Foos in North America.

As for Hester, he served as the producer on Foos drummer Taylor Hawkins' solo debut, "Taylor Hawkins & the Coattail Riders." The set is due March 21 via Thrive Records and will be supported by a U.S. tour this spring. Hawkins is streaming a new album track each week on his Myspace.com page.