There are more than one artist with this name:

1.
A.G. is one of the original members of the legendary crew D.I.T.C. (Diggin In The Crates) which consists of him, O.C., Lord Finesse, Diamond (D), Show, Fat Joe, Buckwild and the unforgetable Big L (R.I.P.). With producer Show he also forms the crew Showbiz & A.G. He released two soloalbums ("the dirty versions" and "get dirty radio"). With Show he released the albums "runaway slave", "goodfellas" and "full scale" and the EP "soul clap". In 2000 the whole D.I.T.C. released the possealbum "worldwide". On A.G.'s current album he raps over beats of J Dilla, Madlib, Oh No, Lord Finesse and Show.

2.
Peter A.G. Nielsen is the singer in the Danish rock band Gnags. He has so far released three solo albums: "Normalt Er Han Ellers Cool" (1978), "Solo" (1999) and "Det Scene Show" (2011).
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