Complex sentence: Holly Blake-Arnstein (born August 3,1985) is an American singer and dancer, best known for being the lead singer of the pop group Dream from 1998, until they disbanded in 2003.
Split into simpler sentences: Holly Blake-Arnstein (born August 3,1985) is a former American singer and dancer. Arnstein is best known for being the lead singer of the pop group Dream in 1998 until they disbanded in 2003.