Her one hit wonder is a catchy number.. but I have heard her other songs, her beat and style on all her songs is almost the same as her first hit. I just don't see her going anywhere unless she changes it up. My advice.. It's a short ride.. save some money.
Oh, gilmourwaters and Hangtenfeet, I see now that by "one hit wonder" you mean that "one" special person (yourself) "wonders" whether the song in question is a "hit," regardless of whether it is according to any industry standard.
By the way, most big artists have an easily identifiable style which appears in many of their songs.