One thing that surprises me about Rewind is that they apparently won't play anything that didn't hit the charts by Dec 31, 1989. So they will play Tom Petty's Free Fallin' and Janet Jackson's Rhythm Nation, since they first charted at the end of 89 -- even though neither became a big hit until 1990. Meanwhile, Janet Jackson's Escapade -- which would be a natural fit for Rewind -- doesn't get played because it didn't initially chart until March, 1990.
I could understand this policy if the station's positioner specifically cited decades, but it doesn't. Clearly they image around the 80's, but they don't use the term 80's much (if at all), and certainly they reach way back into the 70's as well. So why the arbitrary hard stop on the release date? Hardly any listeners are going know and care whether Free Fallin' was released in 89 or 90.
So Rewind's arbitrary Dec-89-release cut-off doesn't make sense. Early-90's music that fits should be a natural resource for this station. That said, if there MUST be an arbitrary cut-off, 1989 isn't such a bad place for it, since 1990 is when the CHR airwaves were largely taken over by AC pablum like Wilson Phillips, and ballads up the wazoo. The change did align pretty closely with the change in decade. But there were still upbeat early-90's hits that would sound good on Rewind.