Led Zeppelin‘s Robert Plant and singer-songwriter Alison Krauss have announced a 2022 US and European tour, marking their first time hitting the road together in 12 years.It comes after the pair released their new album ‘Raise The Roof’ yesterday (November 19), marking 14 years since the release of their first collaborative release, ‘Raising Sand’.‘Raise The Roof’ features 12 new recordings of songs by the likes of Merle Haggard, Allen Toussaint, The Everly Brothers, Anne Briggs, Geeshie Wiley,