The Mars Volta, progressive alternative rockers, just as their tour is about to kick off has expanded their headlining US outing backing “Octahedron,” their newly released album.

The Mexico based, Texas born group will start their summer and fall tour on August 29, appearing at Outside Lands Festival in San Francisco, followed by several stops on the West Coast before they head east. Seven shows at last check have been added. These include shows in Toronto on October 4, in Montreal on October 5, and three East Coast shows.

“Octahedron” was released in June. It is the fifth studio album for the band and debuted on Bilboard’s 200 at No. 12. The new album follows “Bedlam in Goliath,” their album from last year which featured the single “Wax Simulacra,” which won a Grammy award.

Before the new album was recorded last year, Omar Rodriquez-Lopez, frontman for The Mars Volta, pared down the band to a line up of six. He relieved Paul Hinojos, guitarists, as well as Adrian Terrazas-Gonzalez, saxophonist and percussionist, from their duties with the band, according to the website for The Mars Volta.

2010 Mars Volta Concert Tour
August 2009
29 – San Francisco, CA – Outside Lands Festival
30 – Los Angeles, CA – Hollywood Palladium

September 2009
1 – Los Angeles, CA – Hollywood Palladium
2 – Santa Barbara, CA – Santa Barbara Bowl
4 – San Diego, CA – SOMA San Diego
5 – Phoenix, AZ – Dodge Theatre
7 – Tulsa, OK – Cain’s Ballroom
8 – St. Louis, MO – The Pageant
10 – Minneapolis, MN – First Avenue
11 – Chicago, IL – Congress Theater
13 – Morrison, CO – Red Rocks Amphitheatre
14 – Kansas City, MO – Midland Theatre
16 – Dallas, TX – Palladium Ballroom
17 – Houston, TX – Verizon Wireless Theater
19 – San Antonio, TX – San Antonio Municipal Auditorium

October 2009
4 – Toronto, Ontario – Kool Haus
5 – Montreal, Quebec – Metropolis
8 – New York, NY – Roseland Ballroom
10 – Philadelphia, PA – Electric Factory
11 – Baltimore, MD – Sonar

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