Cage

From Discogs:

A horrific childhood--eventually culminating in drug abuse and a stint in a mental institution--informs this upstate N.Y. rapper's deeply affecting rhymes. With an intense flow that at times recalls the spoken-word material of Sage Francis, Cage exorcises his painful demons. Affiliated with Definitive Jux Records.

From Lastfm:

There is more than one artist with this name: 1. The Rapper: Cage Kennylz (born Christian Palko), commonly known as Cage, is an underground rapper based in New York City, United States. Cage's life has gone from watching his father shoot heroin, to addiction and violence and mental institutions to cutting an album for Columbia Records and being a rising star in the heyday of the NYC independent rap scene, to the final culmination and personal triumph that his most current release Hell's Winter has become.

Read more about Cage on Last.fm.

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From Wikipedia:

Chris Palko, better known by his stage name Necro, is an American emo rapper from New York City. He has released three studio albums and two extended plays. Cage is also the founder of the underground hip-hop supergroup called the Weathermen.