2girls, black_footwear, black_skirt, black_socks, black_suit, blue_bow, blue_bowtie, bow, bowtie, chair, closed_eyes, extreme_hearts, formal_clothes, guitar, guitar_case, hayama_hiyori, highres, instrument, instrument_case, kodaka_saki, long_sleeves, multiple_girls, music, open_mouth, outdoors, pink_bow, pink_bowtie, pink_vest, playing_instrument, shirt, short_hair, side_ponytail, sincos, singing, sitting, skirt, sky, socks, suit, table, vest, white_shirt, yellow_socks