And Plant reveals that while he was "inspired" working on 2010's Band Of Joy, he was excited to get back to the UK to hook up with his group to work on the new record.

He tells CBS This Morning: "To be inspired is a wonderful thing and I spent time in Nashville and made a record with Patty Griffin and Buddy Miller. I was always doing covers, beautiful American pieces, songs I could never have written because they came from their vision of music. So to go back to the UK and actually create something really fresh and new was fantastic.

He continues: "I'm with these guys I've played with before I met Alison Krauss. I went back to Britain and teamed up with my old friends and there's a great ethnic and musically intense combination of West Africa and British trance music.