She tends to change it up per album to keep the work fresh & interesting. That's what I have my fingers crossed for come the fourth go around.
Oh, I can't wait for that to be thrown back into their face. "where did Lady Gaga go? I guess she's done, lol." Yeah, b/c everyone needs to be in the spotlight while they're off working on an album. Iron Maiden puts out an album every three years and when they come back it's like they never left. Gaga is in the same capacity - if not more given her mainstream lore.