[5][8] He was cast on Ally McBeal by the show's creator, David E. Kelley, performing "You're Still You", later released on his debut album, for the 2001 season four finale.

He returned to Broadway in 2023 playing the title character in a revival of Sweeney Todd: The Demon Barber of Fleet Street, for which he earned his second Tony Award nomination.

[7] In the summers of 1997 and 1998, he went to the Interlochen Center for the Arts Camp in Michigan,[11] majoring in musical theater, and began taking vocal lessons.

[11] In late 1997, the 16-year-old Groban was introduced by his vocal coach, Seth Riggs, to producer and arranger David Foster and future manager Brian Avnet.

Groban was asked to return the next season to reprise his role as Wyatt, performing "To Where You Are", airing just two weeks after his debut album was released.

"[19] Under Foster's influence, Groban's first album focused more on classics such as "Gira Con Me Questa Notte" and "Alla Luce Del Sole".

He performed in many benefit shows, including "The Andre Agassi Grand Slam Event For Children," alongside Elton John, Stevie Wonder, Don Henley, and Robin Williams; " Muhammad Ali's Fight Night Foundation" which honored Michael J.

In December 2002, he performed "To Where You Are" and sang "The Prayer" in a duet with Sissel Kyrkjebø at the Nobel Peace Prize Concert in Oslo, Norway.

The Washington Post said: "Illuminations" is not a revelation, but it offers a perfectly fine, and often quite lovely, glimpse at a pop-classical crossover artist in the middle of crossing over.

[29] Beginning May 12, 2011, and continuing through December of that year, Groban undertook the 81-city Straight to You Tour to promote Illuminations, encompassing appearances in North America, Europe, and South Africa.

[33] On Groban's Facebook page in March 2015, he announced the release of the album Stages, consisting of covers of songs from Broadway musicals.

The US leg of the tour began on October 18, 2018, in Duluth, Georgia which is northwest of Atlanta concluding at Madison Square Garden in New York City on November 18.

[40] On June 26, 2018, Groban announced via social media that his album Bridges would be released on September 21 and would contain a cover of Céline Dion's song "S'il suffisait d'aimer" along with new tracks.

[45] Groban returned to Broadway in the title role in a revival of Stephen Sondheim’s musical Sweeney Todd: The Demon Barber of Fleet Street, opposite Annaleigh Ashford as Mrs. Lovett and Jordan Fisher as Anthony Hope, directed by Thomas Kail.

[47] He has performed with Little Big Town, on Christmas at the Opry, and hosted his own show called Josh Groban and Friends Go Home For the Holidays.

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.

[51] On September 21, 2008, Groban performed a comical medley of well-known TV theme songs at the 60th Annual Primetime Emmy Awards.

At the 2010 BCS National Championship Game, he performed the Star Spangled Banner on January 7, 2010, with Red Hot Chili Peppers bassist Flea at the historic Rose Bowl in Pasadena, California.

Bang!, The Tonight Show with Jay Leno, 20/20, Today, Macy's Thanksgiving Day Parade, Super Bowl XXXVIII, and Jimmy Kimmel Live!.

[54] In a 2012 interview, Groban was asked if he would consider hosting a long-term talk show: Music is so 100 percent for me that the idea of giving that up in any way, shape, or form would be terrifying to me...

In February 2013, Groban appeared in CSI: NY's "Blood Actually" (season 9, episode 16), performing his new song "Happy In My Heartache",[60] and guest anchored on Canada AM.

[61] Also in 2013, he played one of the lead characters named Sam in the independent comedy film Coffee Town, produced by CollegeHumor and co-starring with longtime friend and actor Glenn Howerton.

[64] He appeared in cameo roles in the seventh season of Parks and Recreation (2015) and in Crazy Ex-Girlfriend (as himself); in the latter, he sang the original song "The End of the Movie".

Under the guidance of his mentor David Foster, Groban performed for VH1 Save the Music Foundation (2005), Tsunami Aid: A Concert of Hope (2005), Fifth Annual Adopt-A-Minefield concert (2005), 2nd Annual Grammy Jam (2005), Live 8 (2005), The Heart Foundation Gala (2005), David Foster and Friends Charity Gala (2006), and other charity events.

Inspired by a visit with Nelson Mandela during a 2004 trip to South Africa, he established the Josh Groban Foundation to help children in need through education, healthcare and the arts.

[75] On February 28, 2008, he appeared in One Night Live at the Air Canada Centre in Toronto with Bryan Adams, Sarah McLachlan, Jann Arden, and RyanDan in aid of the Sunnybrook Hospital Women and Babies Program.

They raised $44,227 for the Josh Groban Foundation, to benefit the Noah's Ark children's orphanage called Siyawela in South Africa.

His Find Your Light Foundation also made a donation to Little Kids Rock to support their mission of keeping music education in our public schools.

[80] Some of Groban's musical influences have been Radiohead, Steve Perry, Paul Simon, Sting, Peter Gabriel, Freddie Mercury,[81] 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.