JT Music (previously JT Machinima) is an American YouTube duo that writes and composes raps for popular nerd culture sites, most popularly video-games, films and series. The team consists of Timothy Ames (a.k.a. Skullkruncher13) and John Geraldi (a.k.a. Patfan). The “J” and “T” in “JT Music” represent both of their first initials.

JT Machinima was formed on December 26, 2008. The group’s original purpose was to keep Pat and Skull in contact, but quickly grew popularity allowing it to become more than it’s original intention. JT briefly described their first song, “The Greatest Ever” in a 2018 track, celebrating ten years of being a duo:

Two boys ventured into Halo 3 matchmaking
To start their journey, making charming, yet often cringey music videos

On November 1, 2017, JT was signed to Rooster Teeth’s Let’s Play Family, therefore changing their name from JT Machinima to JT Music.

Since JT changed their name, they have released several compilation albums including: JT XV-XXI, Crate Expectations, The Overwatch Collection, O.P., and others.