score_9_up, score_8_up, score_7_up, score_6up, source_anime, 1girl, solo, Raiden_Mei, Mei_Music, spotlights, stage lights, stage wall, sitting on stool, playing piano, closed eyes, expressionless, from side, from front, long hair, raiden mei, ponytail, purple hair, side braid, white dress, halter dress, long sleeves, collared collar, blue headwear, mini top hat, bare shoulders, flower on thigh, dynamic cowboy shot, indoors, idol stage background,