THE iDOLM@STER: Cinderella Girls - Sunflower (complete version)

from a comment: Mio Honda (Pictured, brunette colored hair), Mika Jougasaki (pictured, pink haired), Kirari Morobishi, Shin Sato and Sanae Katagiri (not pictured). It also appears as the 3rd ending for the THE iDOLM@STER: Cinderella Girls Theater anime.