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Ashanti - Murder Inc. killed the stage last night when Ashanti and Ja Rule reunited for Def Jam's 30th anniversary concert at the Barclays Center in Brooklyn. Click on to see some of the other music stars who came out as BET cameras caught them before they hit the stage. (Photo: Krista Schlueter/BET)

Photo By Photo: Krista Schlueter/BET

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2 Chainz - The "Hair Weave Killer" was in the building as he spit his "Crack" and continued to forge Def Jam's historic legacy.(Photo: Krista Schlueter/BET)

Photo By Photo: Krista Schlueter/BET

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Onyx - Sticky and his Onyx brothers had the crowd slam dancing and throwing their gunz in the air last night. (Photo: Krista Schlueter/BET)

Photo By Photo: Krista Schlueter/BET

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Warren G - Do you see what I see? Warren G  was in the house as he "Regulated" for Def Jam West.(Photo: Krista Schlueter/BET)

Photo By Photo: Krista Schlueter/BET

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Big Sean - Def Jam's newest hall of fame member, Big Sean, held it down for the label known for revered lyricists. (Photo: Krista Schlueter/BET)

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EPMD - EPMD were all about their business last night as they turned back as they delivered a rampage and gave the people what they wanted. (Photo: Krista Schlueter/BET)

Photo By Photo: Krista Schlueter/BET

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Ja Rule - Ja Rule put it on the crowd yesterday and made the crowd live it up as he ran through his list of hits.(Photo: Krista Schlueter/BET)

Photo By Photo: Krista Schlueter/BET

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Sway Calloway - History was in the building last night and who better to document and host the 30th anniversary celebration of Def Jam than hip hop's resident griot, Sway.(Photo: Krista Schlueter/BET)

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Peter Rosenberg - Hot 97's Peter Rosenberg came through and showed respect to the best label to ever do it.(Photo: Krista Schlueter/BET)

Photo By Photo: Krista Schlueter/BET