1girl, ater9, blue_eyes, blush, breasts, cleavage, fins, head_fins, holding, holding_instrument, instrument, liquid_hair, long_hair, looking_at_viewer, mermaid, monster_girl, music, navel, open_mouth, original, playing_instrument, purple_hair, scales, solo, teeth, upper_teeth_only, very_long_hair, water_drop, wavy_hair