9b11f552____Final_Fantasy_X_2_Item_List__Location
[Name] Book of Magical Dances II [Description] Enables Songstress to learn Magical Masque. [Location] 
Obtained for defeating the Experiment at Djose Temple in Chapter 5, when all it's stats are at level 5, see our Secrets and Sidequests Section for more information.
Final Fantasy World - Final Fantasy X-2 Item List
Location