Gregg Gillis  quit his job as a biomedical engineer two years ago to become a full-time mashup artist known as Girl Talk . He still approaches his music like a scientist, though, combining the DNA of songs in divergent genres to grow unique hybrid jams. He's the only one who knows the full genetic code. But here's a stab by Fast Company and infographic artist Tiffany Farrant  at mapping the samples on Girl Talk's latest, "All Day."
Click the graphic to expand and comb through it.