PopWatch reader Jason in Greenville, S.C., sent me an e-mail over the weekend directing me to check out a piano-only version of Mariah Carey’s latest single, ”Touch My Body.” And while the rendition doesn’t leave me quite as rapturous as one YouTube commenter (“love it am crying!” is the listener’s four-word review), I have to admit I’ve had it on repeat loop all morning long in my office. So this means either a) I’m officially ancient and months away from filling my iPod with elevator music; or b) Jason is right in his observation that Mariah is underrated for her ability to write a terrific, complex melody. Listen for yourselves, PopWatchers, then make the call.