Alt-hip-hop outfits Gym Class Heroes [ tickets ] and The Roots [ tickets ] have made plans to co-headline a North American fall tour.

British singer/rapper Estelle will support the outing, which is scheduled to launch Oct. 3 in Baltimore, MD, and visit nearly 20 cities across the US through early November. Details are listed below.

Members of Gym Class Heroes' fan club will have access to pre-sale tickets beginning tomorrow (8/12), and the general public will get its shot beginning this Friday (8/15). One dollar from each ticket sold will be donated to youth organizations, according to a press release.

The tour will follow the Sept. 9 release of Gym Class Heroes' fourth album, "The Quilt," which features special guest contributions from artists including Busta Rhymes, Daryl Hall and Estelle. The lead single, "Cookie Jar" featuring The-Dream, is already making waves on Billboard's Pop 100 chart, and its companion video is set to premiere Friday (8/15) on MTV's new FNMTV channel.

The video for another track, "Peace Sign / Index Down," is currently making an impact at MTV stations and is streaming at the group's website.

"The Quilt" follows Gym Class Heroes' 2006 breakthrough album, "As Cruel As School Children," which reached No. 35 on the Billboard 200 and spawned the pop hit "Clothes Off!!"

The band is currently finishing its final week on the Vans Warped Tour and will spend a couple of weeks in Europe next month. Gym Class Heroes' full tour itinerary can be found at its MySpace page.

The Roots are also getting ready to roll out a two-week European jaunt, which is detailed at the band's MySpace page. The Grammy-winning hip-hop/soul outfit has been on the road supporting its 10th album, "Rising Down," which topped the Rap Album chart in May and reached No. 6 on The Billboard 200.