Alison Krauss

Led Zeppelin legend felt "exposed and vulnerable" as duet album ‘Raising Sand’ began to form.

Their second collaboration, 'Raise the Roof,' arrives today.

Listen to the only original song on their second album, ‘Raise the Roof.’

Upcoming album will include a wide range of folk, blues and rock covers, plus one original.

Track was made famous by Lucinda Williams in 1998.

Lead single "Can't Let Go' finds the duo covering Lucinda Williams.

New LP would be the follow-up to 2007's 'Raising Sand.'