Ziggy gets 30 / 2 = <<30/2=15>>15 electropop song requests every night.
There are 15 / 3 = <<15/3=5>>5 dance song requests every night.
There are 5 - 3 = <<5-3=2>>2 oldies requests every night.
Ziggy plays DJ’s choice 2 / 2 = <<2/2=1>>1 time every night.
Thus, Ziggy gets 30 - 15 - 5 - 5 - 2 - 1 = <<30-15-5-5-2-1=2>>2 rap songs requested every night.
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