Complex sentence: As of 2014, Australian hip hop is predominantly an underground music scene, whereby commercial success has been attained by several artists, such as Hilltop Hoods and Bliss n Eso.
Split into simpler sentences: As of 2014, Australian hip hop is predominantly an underground music scene. Commercial success has been attained by several artists, such as Hilltop Hoods and Bliss n Eso.