Kind of an unusual one cropped up in the past week, a jazz tune: "Small Day Tomorrow." My favorite version is done by Janis Siegel, but hers isn't on YouTube, so I had to settle for Lee Aaron (who's good, too). Apparently, Aaron used to be a heavy metal singer, so she made quite a switch.
Otherwise, a pretty quiet week--musically--inside my head. Oh, I did have Elvis's "Are You Lonesome Tonight?" for about a day and a half, but not as insistently as happens sometimes. Try the Norah Jones instead of Elvis.