^ Ima Sugu Hoshii and Won't Be Long are both covers, originally by Japanese artists.
But even if she didn't have any released as singles... I definitely wouldn't rule out the option of it being a regular album track (like CUTIE HONEY, another Japanese cover) or even a single, especially since she's so cover crazy the past few years, lol.
And I think the sales will drop, of course, but not by much... I just have that feeling. >_> But I'm probably wrong. XD