About Josh Groban Josh Groban is an American singer, songwriter, record producer, and actor. The popular singer has released 9 studio albums to date and has sold over 20 million records in the United States. He was charted as the number-one best selling artist in the United States in 2007. Groban originally studied acting but later moved to singing. As an actor, he starred in numerous films, tv series, theatre productions, Broadway and has appeared in various format television shows as well. He has also hosted several programs.