- Welcome,Future World!!!Re:vale & TRIGGER & IDOLISH7Vocalこんにちは!Melodious Octaveです✨20collabMelodious Octave
- Dis one.九条天/Melodous OctoberVocalこんにちは、Melodious Octaveです!1collabMelodious Octave
- ナナツイロREALIZIDOLISH7/七瀬陸/Melodious OctaveVocalこんにちは、Melodious Octaveです!2collabMelodious Octave
- ZONE OF OVERLAPŹOOĻVocalこんにちは!Melodious Octaveです✨12collabMelodious Octave
- Incomplete Ruler七瀬陸(小野賢章)、九条天(斉藤壮馬)Vocalこんにちは!Melodious Octaveです✨4collabMelodious Octave
- Forever NoteMEZZO''Vocal4collabMelodious Octave
- ササゲロ -You Are Mine-ŹOOĻVocalこんにちは!Melodious Octaveです✨11collabMelodious Octave
- Bang!Bang!Bang!ŹOOĻVocalこんにちは!Melodious Octaveです✨8collabMelodious Octave
- NiGHTFALLIDOLiSH7Vocalこんにちは!Melodious Octaveです✨14collabMelodious Octave
- Pieces of The WorldIDOLiSH7, TRIGGER, Re:vale, ŹOOĻVocalこんにちは!Melodious Octaveです✨18collabMelodious Octave