Third Day, Switchfoot, Robert Randolph & the Family Band and Jars of Clay, among others, will join forces for the Music Builds tour, which launches Aug. 21 at the DTE Energy Music Theatre in Detroit, and wraps Oct. 12 at the Pepsi Center in Denver.

Artists on the 23-city U.S. amphitheater/arena trek have teamed with nonprofit housing organization Habitat for Humanity and tour producer Live Nation to donate $1 from each concert ticket sold to building new homes for those in need. Money raised from ticket auctions and special merchandise will also benefit the housing organization. In addition, the bands will help build homes at Habitat building sites on various tour stops.

Pre-sale tickets will go on sale at each artist's fan club Web site beginning May 9. The general Internet pre-sale starts May 14, and tickets go on sale to the public on May 16 via livenation.com. Prices have not yet been revealed.

A special pre-tour performance by Third Day, Switchfoot and Robert Randolph & the Family Band will be held tonight (April 21) at the Wildhorse Saloon in Nashville. Live Nation is working in conjunction with Santa Ana, Calif.-based Christian entertainment company Transparent Productions to produce the jaunt.

In late 2007, Switchfoot raised more than $100,000 for Habitat for Humanity during its Appetite for Construction tour, which concluded Dec. 3 in Everett, Wash. An average of 3,000 tickets were moved per night, with $1 of each ducat sold donated to local Habitat affiliates in each of the markets. The San Diego-based band also gave a limited amount of concert tickets to the organization's volunteers in each city.