Metaform (born Justice Aaron) is an American music producer, musician, and songwriter. He is considered a prominent figure in the development of instrumental Hip-Hop and first gained notice with the release of his highly acclaimed debut album Standing on the Shoulders of Giants, which was constructed entirely from samples.

His instrumental opus, Standing on the Shoulders of Giants, was released on April 15, 2008, which spent the entire month of May on the College Music Journal's top 20. It was produced and engineered by Metaform at his various home studios over a five year period in which he kept in deep isolation, it is hailed as one of the top ten records of 2008 by Eddie Fleisher of Alternative Press Magazine. Since its release, the album has received praise in major publications including URB, REMIX, XLR8R, and Alternative Press. Alternative Press reviewed the album as "One of the best instrumental hip-hop records in years."