Chicago’s production duo Da Internz (Ernest 'Tuo' Clark and Marcos Palacios) have produced for many of hip-hop/R&B's heavy hitters such as John Legend, Mims, Greyson Chance, Rihanna and Big Sean. Their songs include: Rihanna’s “Birthday Cake,” Sean Kingston & Justin Bieber’s 'Eenie Meenie,' Big Sean “Dance (A$$),” Greyson Chance 'Waiting Outside The Lines,' and Mims’ 'Move (If You Wanna),' among others.