Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
1 "Melodious Maestra" monster + 1 or more "Melodious" monsters This card gains 300 ATK for each Fusion Material used for its Fusion Summon. This card can make a second attack during each Battle Phase. If this Fusion Summoned card is sent to the Graveyard: You can target 1 "Melodious" monster in your Graveyard; add it to your hand.
--幻奏の華歌聖ブルーム・プリマ
--Bloom Prima the Melodious Choir
local s,id=GetID()
function s.initial_effect(c)
	--fusion material
	c:EnableReviveLimit()
	Fusion.AddProcMixRep(c,true,true,aux.FilterBoolFunctionEx(Card.IsSetCard,SET_MELODIOUS),1,99,aux.FilterBoolFunctionEx(Card.IsSetCard,SET_MELODIOUS_MAESTRA))
	--summon success
	local e2=Effect.CreateEffect(c)
	e2:SetType(EFFECT_TYPE_SINGLE)
	e2:SetCode(EFFECT_MATERIAL_CHECK)
	e2:SetValue(s.matcheck)
	c:RegisterEffect(e2)
	--Double attack
	local e3=Effect.CreateEffect(c)
	e3:SetType(EFFECT_TYPE_SINGLE)
	e3:SetCode(EFFECT_EXTRA_ATTACK)
	e3:SetValue(1)
	c:RegisterEffect(e3)
	--To hand
	local e4=Effect.CreateEffect(c)
	e4:SetDescription(aux.Stringid(id,0))
	e4:SetCategory(CATEGORY_TOHAND)
	e4:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e4:SetCode(EVENT_TO_GRAVE)
	e4:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DELAY)
	e4:SetCondition(s.thcon)
	e4:SetTarget(s.thtg)
	e4:SetOperation(s.thop)
	c:RegisterEffect(e4)
end
s.listed_series={SET_MELODIOUS,SET_MELODIOUS_MAESTRA}
s.material_setcode={SET_MELODIOUS}
function s.matcheck(e,c)
	local ct=c:GetMaterialCount()
	local e1=Effect.CreateEffect(c)
	e1:SetType(EFFECT_TYPE_SINGLE)
	e1:SetCode(EFFECT_UPDATE_ATTACK)
	e1:SetValue(ct*300)
	e1:SetReset(RESET_EVENT|RESETS_STANDARD_DISABLE&~RESET_TOFIELD)
	c:RegisterEffect(e1)
end
function s.thcon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	return c:IsPreviousLocation(LOCATION_MZONE) and c:IsFusionSummoned()
end
function s.filter(c)
	return c:IsSetCard(SET_MELODIOUS) and c:IsMonster() and c:IsAbleToHand()
end
function s.thtg(e,tp,eg,ep,ev,re,r,rp,chk,chkc)
	if chkc then return chkc:IsLocation(LOCATION_GRAVE) and chkc:IsControler(tp) and s.filter(chkc) end
	if chk==0 then return Duel.IsExistingTarget(s.filter,tp,LOCATION_GRAVE,0,1,nil) end
	Duel.Hint(HINT_SELECTMSG,tp,HINTMSG_ATOHAND)
	local g=Duel.SelectTarget(tp,s.filter,tp,LOCATION_GRAVE,0,1,1,nil)
	Duel.SetOperationInfo(0,CATEGORY_TOHAND,g,1,0,0)
end
function s.thop(e,tp,eg,ep,ev,re,r,rp)
	local tc=Duel.GetFirstTarget()
	if tc:IsRelateToEffect(e) then
		Duel.SendtoHand(tc,nil,REASON_EFFECT)
	end
end