Sep 26 2011 by Paul Cole, Sunday Mercury

THEY are two of the most famous voices in the world. One is a sweet-voiced West End hero, the other a blues-soaked rock warbler.
Now Alfie Boe and Robert Plant are joining forces as the most unlikely duo ever to share a stage.
Thirty-nine year-old tenor Boe has made his name in big musicals, and is regarded as the voice of Les Misérables thanks to his show-stealing performances as hero Jean Valjean.
Black Country singer Plant, who has just turned 63, conquered the world with Led Zeppelin before embarking on a series of successful solo projects, recently working with songbird Alison Krauss.
The two met by chance in a bar and got chatting. During the subsequent conversation, each realised that he was a fan of the other’s work and they decided they should sing together.
Says Boe: “There are many people in the music business that I would love to collaborate with – but top of the list has always been Robert Plant. I’m a huge fan of classic rock.