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INDIANAPOLIS, IN - FEBRUARY 05: (L-R) Musician Lance Bass, actress Nikki Reed, and singer Josh Groban attend The Rolling Stone Volkswagen Rock & Roll Fan Tailgate Party at The Crane Bay on February 5, 2012 in Indianapolis, Indiana.

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INDIANAPOLIS, IN - FEBRUARY 05: Singer Josh Groban attends The Rolling Stone Volkswagen Rock & Roll Fan Tailgate Party at The Crane Bay on February 5, 2012 in Indianapolis, Indiana.

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NEW YORK, NY - NOVEMBER 05: Musician Josh Groban attends the 2011 Happy Hearts Fund: Land of Dreams, Haiti at the Metropolitan Pavilion on November 5, 2011 in New York City.

AP Photo 3 months ago

Singer Josh Groban and Happy Hearts Fund founder Petra Nemcova attend the Happy Hearts Fund: Land of Dreams, Haiti Gala on Saturday, Nov. 5, 2011, in New York.

AP Photo 3 months ago

Josh Groban performs at Happy Hearts Fund Land of Dreams: Haiti gala on Nov. 5, 2011 in New York City.

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WASHINGTON, DC - JULY 03: Josh Groban performs during the annual PBS 'A Capitol Fourth' concert at the US Capitol on July 3, 2011 in Washington, DC.

Reuters Pictures 9 months ago

Oprah Winfrey (2nd R) gestures next to actor Tom Cruise (L) and singers Patti LaBelle (2nd L) and Josh Groban (R) during the taping of "Oprah's Surprise Spectacular" in Chicago May 17, 2011. Winfrey neared the end of her quarter-century reign on national television on Tuesday night with...

AP Photo 9 months ago

Singers Patti LaBelle, left, and Josh Groban perform during a star-studded double-taping of "Surprise Oprah! A Farewell Spectacular," Tuesday, May 17, 2011, in Chicago. "The Oprah Winfrey Show" is ending its run May 25, after 25 years, and millions of her fans around the globe are...

AP Photo 9 months ago

Oprah Winfrey reacts as she is surrounded by Tom Cruise, left, Patti LaBelle and Josh Groban, right, during a star-studded double-taping of "Surprise Oprah! A Farewell Spectacular," Tuesday, May 17, 2011, in Chicago. "The Oprah Winfrey Show" is ending its run May 25, after 25 years, and...

Getty Images 9 months ago

NEW ORLEANS, LA - MAY 12: ELEW (the artist formerly known as Eric Lewis) performs as the opening act for Josh Groban during the Straight to You North American tour opener at UNO Lakefront Arena on May 12, 2011 in New Orleans, Louisiana.

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NEW ORLEANS, LA - MAY 12: Musician Josh Groban performs during the Straight to You North American tour opener at UNO Lakefront Arena on May 12, 2011 in New Orleans, Louisiana.

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Josh Groban sings the national anthem before the start of the NBA All-Star Game February 20, 2011, part of NBA All-Star Weekend at Staples Center in Los Angeles, California.

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LOS ANGELES, CA - FEBRUARY 20: Singer Josh Groban sits in the audience during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California.

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LOS ANGELES, CA - FEBRUARY 20: Singer Josh Groban (L) and actor/comedian George Lopez speak in the audience during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California.

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LOS ANGELES, CA - FEBRUARY 20: Singer Josh Groban performs the National Anthem during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California.

Reuters Pictures 12 months ago

Singer Josh Groban performs the U.S. national anthem before the NBA All-Star basketball game in Los Angeles February 20, 2011.

AP Photo 7 months ago

Jordin Sparks during rehearsals on the West Lawn of the U.S. Capitol for the 31st annual broadcast of A Capitol Fourth live on PBS Monday, July 4 at 8/7C. The event also stars Steve Martin, Matthew Morrison, Josh Groban, and Little Richard with the Broadway cast of Million Dollar Quartet.