depends on what you consider underground...cuz there is a shitload of underground hip hop, like living legends, atmosphere, hieroglyphics, ect...and there's hella east coast shit on there...but if you talkin bout like some west coast shit then it doesn't have a lot of that, but you can find shit on there every once in a while, like old e-40 shit, some 3x, shit like that...i got bout 400 albums on there and i got a coo selection of west coast shit that i can put up there...if you lookin for jus music its coo but you dont find a lot of videos and programs on there...