Whats up with Japanese idol songs and their misspelling of holiday names? First its Hello wink for Halloween and now its Happy New Yeah for Happy New Years... Anyways, Happy new year everyone! Hope 2019 was marvelous for everyone! Lets look forward to a wonderful 2020! Happy New Yeah! is an original song appearing on THE iDOLM@STER Cinderella Girls: Starlight Stage. It is performed by Uzuki Shimamura, Rin Shibuya, Mio Honda, Shin Sato, and Kanako Mimura.