EDH deck tech - Songs on the Damned! Put that on isocron sceptre
Songs of the Damned loses a lot of points for only being usable once unless you can recur it a lot.
Isochron Scepter does work well with it, however I’d rather run Crypt of Agadeem instead, provided you don’t mind the restriction to only black creatures counting for the amount of mana produced.
Crypt also is a lot better than Songs (in my opinion) as it a land, and thus doesn’t take up a Spell slot in your decks.