Lucifer is one of the Best Masterpieces in SM History

In a review of f(x)’s Pinocchio album, a critic mentioned SHINee:
“Super Junior and SNSD are SM’s A-side, SHINee and f(x) are B-side. SHINee broke down the boundary with Lucifer (perhaps one of the best masterpieces in SM history) in an exquisite way.”