Groban originally studied acting, but moved to singing as his voice developed. Groban attended the Los Angeles County High School for the Arts, a free public school on the campus of California State University, Los Angeles, where students receive a conservatory-style education.
David Foster called Groban to stand in for an ailing Andrea Bocelli to rehearse a duet, "The Prayer", with Celine Dion at the rehearsal for the 1998 Grammy Awards. Rosie O'Donnell immediately invited him to appear on her talk show. Foster asked him to sing at the California Governor's Gray Davis' 1999 inauguration. He was cast on Ally McBeal by the show's creator, David E. Kelley, performing "You're Still You" for the 2001 season finale.
Groban was born in Los Angeles, California, to Lindy (née Johnston), a school teacher, and Jack Groban, a businessman. Groban's younger brother, Chris, was born on Groban's fourth birthday. Groban's father is a descendant of immigrants from Poland and Russia and converted from Judaism to Christianity when he married Groban's mother. Groban's mother's ancestry includes English, German, and Norwegian; one of her own grandfathers was Jewish. His parents are Episcopalians.
Groban first sang in public when he was in the seventh grade. His music teacher chose him to sing a solo of "S'wonderful" at the school's cabaret night, where he sang alone on stage for the first time. At this time, he was more focused on acting, playing Tevye in his high school's production of Fiddler on the Roof. In the summers of 1997 and 1998, he also attended the Interlochen Center for the Arts Camp in Michigan, majoring in music theater, and began taking vocal lessons. He went on to attend the Los Angeles County High School for the Arts as a theater major and graduated in 1999. He was admitted to Carnegie Mellon University, intending to study drama, but he left four months into his first semester after being offered a recording contract and deciding to pursue his singing career.
In late 1998, the 17-year-old Groban was introduced by his vocal coach, Seth Riggs, to Grammy-winning producer and arranger David Foster and future manager Brian Avnet. At the time, Groban had no recording experience and was preparing to begin studying at Carnegie Mellon University. Groban worked for David Foster as a rehearsal singer on a series of high-profile events, including the January 1999 inauguration of Gray Davis as Governor of California and the 1999 Grammy Awards where—as a stand-in for Andrea Bocelli—he rehearsed Foster's "The Prayer" with Céline Dion.
According to manager Avnet, Groban was very nervous about standing in for Bocelli and had to be talked into it, but his performance prompted the show hostess, Rosie O'Donnell, to ask him to appear on her show the following week, which then led to an appearance on Ally McBeal. Creator David E. Kelley created character Malcolm Wyatt for Groban in the season finale aired in May 2001. The character of Malcolm Wyatt was so popular, prompting 8,000 emails from viewers, that Groban was asked to return the next season to reprise his role and perform "To Where You Are." Avnet claims this sequence of events effectively got Groban's career off the ground.
Groban was offered a recording contract at Warner Bros. Records through Foster's 143 Records imprint. Avnet told HitQuarters that Warner initially proved resistant to the deal because "They were afraid they wouldn't be able to get a voice like that on radio." Explaining his reasons for signing the artist, Foster said: "I love his natural ability in the pop and rock arena, but I love his sense of classics even more. He's a true musical force to be reckoned with." Under Foster's influence, Groban's first album focused more on classics such as "Gira Con Me Questa Notte" and "Alla Luce Del Sole."
Groban performed "There For Me" with Sarah Brightman on her 2000–01 La Luna World Tour, and was featured on her "La Luna" concert DVD. He recorded "For Always" with Lara Fabian on the movie soundtrack to A.I.: Artificial Intelligence (2001). Groban performed in many benefit shows, including: "The Andre Agassi Grand Slam Event For Children," singing alongside Elton John, Stevie Wonder, Don Henley, and Robin Williams; "Muhammad Ali's Fight Night Foundation" which honored Michael J. Fox and others; "The Family Celebration" (2001), which was co-hosted by President Bill Clinton and his wife, Hillary Rodham Clinton, and David E. Kelley and his wife, Michelle Pfeiffer; and Michael Milken's CapCure event, which raises funds for cancer research.
The singer's self-titled debut album Josh Groban was released on November 20, 2001. Over the next year it went from gold to double-platinum.
In June 2007, Groban recorded a Christmas album in London with the London Symphony Orchestra and the Magdalen College Choir, which he discussed on the DVD from "The Making of Noël". It was released on October 9, 2007, and is titled Noël. The album has been highly successful in the U.S., breaking numerous records for a Christmas album, as well as becoming the best selling album of 2007 in only its tenth week of release, at sales of 3.6 million.
On July 1, 2007, Groban performed with Sarah Brightman at the Concert for Diana at Wembley Stadium; it was broadcast to over 500 million homes in 140 countries. On February 10, 2008, Groban performed at the 2008 Grammy Awards with Andrea Bocelli in a tribute to Luciano Pavarotti.
On April 14, 2008, Groban joined Idina Menzel for a PBS Soundstage taping. The next day, he held his own taping for the same PBS TV series at Lincoln Center's Rose Hall at Jazz in Manhattan.
On May 12 and 13, 2008 At Royal Albert Hall, London, Groban performed as "The Russian" Anatoly Sergievsky; joining with Broadway stars Idina Menzel and Adam Pascal in "Chess in Concert" a live concert version of the musical Chess composed by Benny Andersson and Björn Ulvaeus of ABBA fame. This performance has since been made into a DVD and CD recording. On September 21, 2008, Groban performed a comical medley of well-known TV theme songs at the 60th Annual Primetime Emmy Awards. In December 2008, Groban appeared on Never Mind the Buzzcocks. He performed a duet with Only Men Aloud! at the Royal Variety Show at the London Palladium for the Prince of Wales and Duchess of Cornwall.
On January 18, 2009, Groban performed as part of the Presidential Inauguration ceremonies, performing "My Country 'Tis of Thee" in duet with Heather Headley. On January, 19. 2009, Groban performed with Herbie Hancock as part of Feeding America's Rally Against Hunger in Washington DC. The event was also attended by Martin Luther King III and actor Ben Affleck. At the 2010 BCS National Championship Game, he performed the Star Spangled Banner on Jan. 7, 2010, with Red Hot Chili Peppers bassist Flea, at the historic Rose Bowl in Pasadena, California.
Some of Groban's musical influences have been Radiohead, Steve Perry, Paul Simon, Sting, Peter Gabriel, Freddie Mercury and Björk. He cites as vocal influences "anyone who told a story with their songs," including Mandy Patinkin, Klaus Nomi, George Hearn, and Luciano Pavarotti.
He was named the Best Selling Artist of All Time on Barnes & Noble in 2007. Groban has sold more than 20 million albums in less than ten years. In 2002, Groban was listed as "100 Sexiest Newcomer" and in 2008, he became one of People's "100 Most Beautiful People".
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