Pendulum Effect:
You can target 1 "Melodious" Fusion Monster you control; send 1 "Melodious" monster from your Deck to the GY, and if you do, the targeted monster gains ATK equal to the Level of that monster sent to the GY x 200 until the end of this turn. You can only use this effect of "Refrain the Melodious Songstress" once per turn.
Monster Effect:
If this card is Normal or Special Summoned: You can add 1 "Melodious" monster from your Deck to your hand, except "Refrain the Melodious Songstress". If a "Melodious" Fusion Monster(s) is Special Summoned to your field, while this card is face-up in your Extra Deck (except during the Damage Step): You can place this card in your Pendulum Zone. You can only use each effect of "Refrain the Melodious Songstress" once per turn.
