You can apply any of the following effects, in sequence, based on the number of "Solfachord" Pendulum Monster Cards you control with different names.
●3+: Return 1 card from your Pendulum Zone to the hand, and if you do, place 1 face-up "Solfachord" Pendulum Monster from your Extra Deck in your Pendulum Zone.
●5+: Special Summon 1 "Solfachord" Pendulum Monster from your hand.
●7+: Destroy all face-up cards your opponent controls.
You can only activate 1 "Solfachord Scale" per turn.