Plant, Krauss Hiiting The Road In April

The bluegrass queen and the self-proclaimed ´golden god´ will be promoting their album ´Raising Sand´.

Robert Plant's world tour with Alison Krauss -- a key obstacle to a Led Zeppelin reunion trek -- will kick off in Louisville, Ky., on April 20.

The bluegrass queen and the self-proclaimed "golden god" will be promoting their album "Raising Sand," which opened at No. 2 on the Billboard 200 last fall.

Other stops include Knoxville, Tenn., on April 22, Chattanooga, Tenn., on April 23 and Birmingham, Ala., on April 26. The tour's 11-date run in Europe follows in May.

The duo will be joined on stage by T Bone Burnett, who produced their album. A longer run of North American shows is planned for June and July, but dates and details have not yet been announced.

"Gone Gone Gone (Done Moved On)," the single from "Raising Sand," was nominated for a Grammy in the pop field.

After Led Zeppelin's triumphant benefit show in London last month, speculation swirled about a full-scale reunion. But Plant's commitment to the Krauss tour was cited as an impediment to any immediate trek.