Apply these effects, in sequence, based on the number of face-up "Solfachord" Pendulum Monsters with different names in your Extra Deck.
• 3+: "Solfachord" Pendulum Monsters you control gain ATK equal to their own Pendulum Scale x 300 this turn.
• 5+: You can destroy 1 card your opponent controls, then if you have an odd Pendulum Scale in your Pendulum Zone, draw 1 card.
• 7+: You can Special Summon 1 "GranSolfachord" monster from your Extra Deck.
You can only activate 1 "Solfachord Symphony" per turn.