He took part in a one-night-only reading benefit of to celebrate the 50th anniversary of the opening of the Delacorte Theater in Central Park, alongside , , , and others on June 18, 2012.
His mother eventually remarried and Martin adopted his stepfather's surname.
Other than that, his career is expecting more additions in the future.
His parents divorced when he was a child.
In 1998, the West End production of Rent opened with four of the original cast members, including Martin.
That same year, Harnell became the singing voice of father in the current version of.