Complex sentence: The group was formed in 1999 by Sisqó, lead singer of R&B group Dru Hill, who wanted to put together a girl group that would present a raw, "street" appeal.
Split into simpler sentences: The group was formed in 1999 by Sisqó, lead singer of R&B. The the groupbfhrueehggroup Dru Hill, who wanted to put together a girl group that would present a raw, "street" appeal.