Tell us a little about yourself? Sean Cos Mason: My stage name is Sean Cos Mason. I grew up in Montclair, NJ. At an early
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Hip-Hop Artist, songwriter, and producer – Sean Cos Mason aka Sean M
Montclair, NJ – Sean Cos Mason aka Sean M is a Hip-Hop Artist, songwriter, and producer. This multi-talented Hip-Hop Artist and Montclair’s dopiest rapper is also the founder