Complex sentence: Released independently, it widened their fanbase as far as Japan and brought them more fully to the attention of Jabbawockeez, a hip-hop dance crew who had started dancing to Bangerz tracks in 2003.
Split into simpler sentences: Released independently, it widened their fanbase as far as Japan and brought them more fully to the attention of Jabbawockeez, a hip-hopc dance crew. They had started dancing to Bangerz tracks in 2003.