The Four Aces is an American male traditional pop music quartet, popular since the 1950s. Over the last half-century, the group amassed many gold records. Its million-selling signature tunes include "Love is a Many-Splendored Thing", "Three Coins in the Fountain", "Stranger in Paradise", "Tell Me Why", and "(It's No) Sin". Other big sellers included "Shangri-La", "Perfidia", and "Sincerely".