Complex sentence: Following her controversial departure from the group in December 2005, Buena released her debut solo album, "Real Girl" in 2007, which contained collaborations with numerous artists including Amy Winehouse and George Michael.
Split into simpler sentences: Following her controversial departure from the group in December 2005, Buena released her debut solo album, "Real Girl" in 2007. The album contained collaborations with numerous artists including Amy Winehouse and George Michael.