There are 3 artists who go by "Greys"

The first is Toronto-based rock band Greys, currently on Concession Records. The band consists of Shehzaad Jiwani on guitar and vocals, Cam Graham on guitar, Matt Morand on bass, and Pat Marshall on drums. Their debut EP, Ultra Sorta, will be released on April 10, 2011 on 10" colored vinyl.

Another Greys is George Royle (UK) ambient/drone/spokenword http://greydays.bandcamp.com.

A third artist is electronic musician Ivan Markovic a.k.a. Greys, born 1984 in Osijek, Croatia.
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