System Of A Down and the Mars Volta will team for a two-month North American tour later this year. Dates and venues have yet to be announced for the outing, which will begin in early August and featur

System Of A Down and the Mars Volta will team for a two-month North American tour later this year. Dates and venues have yet to be announced for the outing, which will begin in early August and feature support from an as-yet-unconfirmed third band.

This will be SOAD's first extended North American tour since 2002. The group will be out in support of "Mesmerize," the first of two discs it will release this year. That set arrives May 17 in the United States via American Recordings, while the second album, "Hypnotize," is due in the fall.

First single "B.Y.O.B." is No. 9 on Billboard's Modern Rock Tracks chart this week; the band will perform the track May 7 on NBC's "Saturday Night Live."

SOAD is in the midst of a short club tour that will roll into Dallas tomorrow (April 29). A month-long European tour will begin May 27 in Lisbon.

As for the Mars Volta, the psychedelic rock outfit will be touring behind its sophomore Universal album, "Frances the Mute," which debuted last month at a career-best No. 4 on The Billboard 200. Both SOAD and the Mars Volta are booked by Don Muller at Creative Artists Agency.