Groff rose to prominence in 2006 for his performance in the lead role of Melchior Gabor in the original Broadway production of "Spring Awakening", for which 22-year-old Jonathan received widespread acclaim and was nominated for a 2007 Tony Award for Best Actor in a Leading Role in a Musical, becoming one of the youngest nominees for the award. He returned to Broadway in 2015 to play the role of King George III of the United Kingdom in "Hamilton", a performance for which he earned a nomination for a 2016 Tony Award for Best Actor in a Featured Role in a Musical. He also appeared on the cast recording, for which he received a 2016 Grammy Award for Best Musical Theater Album.