Simplify the following text for a Grade 7 native English-speaking person.
Original: Following the departure of Carmit Bachar in February 2008 , the group continued as a quintet and in September of that year they released their second album , Doll Domination , spawning singles `` When I Grow Up '' , `` I Hate This Part '' and `` Jai Ho !
Simplified: They made their second album in 2008 , Doll Domination . This album included the singles `` When I Grow Up '' , `` I Hate This Part '' and `` Jai Ho !