The Words and Music of Cold Mountain Benefit Event

44th Annual Grammy Awards - Show

L-R: Emmylou Harris, Gillian Welch and Alison Krauss during the "O Brother Where Art Thou?" performance at the 44th Annual Grammy Awards at Staples Center in Los Angeles, Ca., Feb. 27, 2002. (photo by Kevin Winter/ImageDirect)

Dolly Parton (R) performs with Alison Krauss (L) d

NASHVILLE, : Dolly Parton (R) performs with Alison Krauss (L) during the 75th Birthday for country music's Grand Ole Opry 14 October 2000 in Nashville, Tennessee. Several country music stars showed up to help celebrate the event. AFP PHOTO/Neil BRAKE (Photo credit should read NEIL BRAKE/AFP/Getty Images)

The 54th Annual BMI Pop Awards - Show

BEVERLY HILLS, CA - MAY 16: Singer Alison Krauss performs onstage at the 54th Annual BMI Pop Awards at the Regent Beverly Wilshire Hotel on May 16, 2006 in Beverly Hills, California. (Photo by Michael Buckner/Getty Images)

Les Paul & Friends: A Birthday Salute

UNIVERSAL CITY, CA - FEBRUARY 7: Dobroist Jerry Douglas and Alison Krauss perform at the Les Paul Birthday Celebration show at Gibson Amphitheatre at Universal CityWalk on February 7, 2006 in Universal City, California. (Photo by Karl Walter/Getty Images)

39th Annual Country Music Awards - Show

LAS VEGAS - MAY 26: Musicians Brad Paisley (left) and Alison Krauss perform on stage at the "39th Annual Country Music Awards" on May 26, 2004 at the Mandalay Bay Hotel and Casino, in Las Vegas, Nevada. (Photo by Kevin Winter/Getty Images)

Alison Kraus

HOLLYWOOD - SEPTEMBER 29: Singer Alison Kraus poses with a box of Ethel M chocolates at the Distinctive Assets "Women in Rock" talent gift lounge, backstage at the Kodak Theatre on September 29, 2003 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

The 38th Annual CMA Awards - Show

NASHVILLE, TN - NOVEMBER 9: speaks on stage at the 38th Annual CMA Awards at the Grand Ole Opry House November 9, 2004 in Nashville, Tennessee. (Photo by Frank Micelotta/Getty Images)

"I Walk The Line: A Night For Johnny Cash" - Show

LOS ANGELES, CA - OCTOBER 25: Musicians Dwight Yoakum and Alison Krauss perform on stage during the "I Walk The Line: A Night For Johnny Cash" musical tribute at the Pantages Theatre on October 25, 2005 in Los Angeles, California. (Photo by Kevin Winter/Getty Images) *** Local Caption *** Dwight Yoakum;Alison Krauss

The 38th Annual CMA Awards - Press Room

NASHVILLE, TN - NOVEMBER 9: poses backstage at the 38th Annual CMA Awards at the Grand Ole Opry House November 9, 2004 in Nashville, Tennessee. (Photo by Rusty Russell/Getty Images)

Library Of Congress Gershwin Prize For Popular Song Gala

WASHINGTON - MAY 23: Shawn Colvin (L) and Alison Krauss (R) perform during the Library Of Congress Gershwin Prize For Popular Song Gala at the Warner Theater May 23, 2007 in Washington, DC. Paul Simon was honored with performances by Yolanda Adams, Marc Anthony, Shawn Colvin, Dixie Hummingbirds, Jerry Douglas, Art Garfunkel, Philip Glass, Alison Krauss, Ladysmith Black Mambazo, Lyle Lovett, Stephen Marley, James Taylor, Stevie Wonder and Buckwheat Zydeco. (Photo by Brendan Smialowski/Getty Images)

The Grand Ole Opry Goes To The Big Apple

NEW YORK - NOVEMBER 14: Country singer Alison Krauss and her band Union Station perform during a taping of the "Grand Ole Opry" at Carnegie Hall November 14, 2005 in New York City. (Photo by Paul Hawthorne/Getty Images)

The 54th Annual BMI Pop Awards - Show

BEVERLY HILLS, CA - MAY 16: Singer Alison Krauss performs onstage at the 54th Annual BMI Pop Awards at the Regent Beverly Wilshire Hotel on May 16, 2006 in Beverly Hills, California. (Photo by Michael Buckner/Getty Images)

Best Country Album winner Alison Krauss

Los Angeles, UNITED STATES: Best Country Album winner Alison Krauss and Union Station respond to applause during the 48th Annual Grammy Awards 08 February 2006 at the Staples Center in Los Angeles. AFP PHOTO/Timothy A. CLARY (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)

Eric Clapton's Crossroads Guitar Festival

BRIDGEVIEW , IL - JULY 28: Musician Alison Krauss performs during the Crossroads Guitar Festival 2007 held at Toyota Park on July 28, 2007 in Bridgeview, Illinois. (Photo by Tasos Katopodis/Getty Images for Gibson)

Robert Plant and Alison Krauss perform b

Robert Plant and Alison Krauss perform before accepting the Album of the Year award for their album "Raising the Sand" during the 51st annual Grammy awards held at the Staples Center in Los Angeles on February 8, 2009. AFP PHOTO/Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)

Nationwide Mercury Prize 2008 - Arrivals

LONDON - SEPTEMBER 09: Robert Plant and Alison Krauss arrive at the Mercury Music Prize 2008 at Grosvenor House Hotel on September 9, 2008 in London, England. (Photo by Chris Jackson/Getty Images)

2008 Bonnaroo Music And Arts Festival - Day 4

<> the 2008 Bonnaroo Music and Arts Festival on June 15, 2008 in Manchester, Tennessee.

NPCA and PBS Host "Feel Free: A National Parks Celebration in Central Park"

attends a National Parks celebration hosted by the National Parks Conservation Association and PBS at Central Park on September 23, 2009 in New York City.

Kenny Rogers: The First 50 Years Show - Backstage

Performs at Kenny Rogers: The First 50 Years award show>> at the MGM Grand at Foxwoods on April 10, 2010 in Ledyard Center, Connecticut.

New Orleans Jazz & Heritage Festival Day 1

NEW ORLEANS - APRIL 25: Alison Krauss performs during day one of the New Orleans Jazz & Heritage Festival at the Fair Grounds Race Course April 25, 2008 in New Orleans, Louisiana. (Photo by Sean Gardner/Getty Images)

New Orleans Jazz & Heritage Festival Day 1

NEW ORLEANS - APRIL 25: Robert Plant and Alison Krauss perform during day one of the New Orleans Jazz & Heritage Festival at the Fair Grounds Race Course April 25, 2008 in New Orleans, Louisiana. (Photo by Sean Gardner/Getty Images)

Former Led Zeppelin singer Robert Plant

Former Led Zeppelin singer Robert Plant and bluegrass queen Alison Krauss hold their Grammy awards in the photo room during the 51st annual Grammy awards held at the Staples Center in Los Angeles, on February 8, 2009. Plant and Krauss scooped five awards, including the coveted album of the year honor and record of the year prize for work stemming from their acclaimed "Raising Sand." AFP PHOTO / VALERIE MACON (Photo credit should read VALERIE MACON/AFP/Getty Images)

2008 CMT Music Awards - Press Room

poses in the press room during the 2008 CMT Music Awards at the Curb Events Center at Belmont University on April 14, 2008 in Nashville, Tennessee.

Recording Academy Hosts GRAMMY Salute to Country Music Honoring Vince Gill

the GRAMMY salute to Country Music honoring Vince Gill hosted by The Recording Academy at The Loveless Barn on September 9, 2009 in Nashville, Tennessee.

Music Saves Mountains Benefit Concert - Show

performs during the "Music Saves Mountains" benefit concert at the Ryman Auditorium on May 19, 2010 in Nashville, Tennessee.

Heart In Concert With Special Guests

performs at the Ryman Auditorium on August 17, 2010 in Nashville, Tennessee.

James Taylor's Perspectives Series

<> at Carnegie Hall on April 20, 2011 in New York City.