It's been a long 13 years, but Robert Plant and Alison Krauss have reunited with producer T-Bone Burnett for the new Raise The Roof collection. Happy Birthday to Robert Plant, who turns 73 today (August 20th)!!! Although Plant has enjoyed a successful solo career since 1982, he will always be best known for his years fronting Led Zeppelin and co-writing the majority of the band's songs with Jimmy Page.