Neither hot producer nor veteran session musician, Gregg Gillis — recording as Girl Talk — is a brilliant sonic collagist with a gift for combining shards of existing and incredibly disparate work by renowned artists and turning them into supreme mash-ups.  

Just hours before his new album is released to the Internet, Gregg Gillis is at home in the gritty Pittsburgh suburb of Wilkinsburg: a two-room apartment crammed with the detritus of his life on the road as internationally acclaimed mash-up artist Girl Talk.