346Pro IDOL selection series
346Pro IDOL selection is a series of bonus CDs released and published by ANIPLEX+ in 2015. They can only be obtained by buying the THE iDOLM@STER: Cinderella Girls anime Blu-Ray/DVDs packed with the Limited edition versions of the odd-numbered THE iDOLM@STER Cinderella Girls Gravure For You! Packs. They'll each obtain a new song by the established idols and rearranges by .