With Heartthrob, Tegan and Sara have stepped out of the awkward transitional phase that was rSainthood and have fully transformed their sound into complete synthpop bliss. Some may call rit "selling out," but I don't see it - this is an immensely fun record that's a huge rimprovement over Sainthood and has all the hallmarks you'd expect from a T&S record, just in ra more accessible, danceable package.
Tegan & Sara employed pop, rock, and electronic influences to great results on their past three albums, combining them with bright and quick-witted songwriting. So...what the hell happened here?