There was a free sampling of Sirius/XM Radio over the Labor Day weekend, and so I was able to partake of its offerings for a few days. I had the satellite radio package for a free, three-month trial after purchasing a car last year, but while it contained a nice variety of music and information channels, it wasn't enough for me to sign-up and become a paying customer. And this weekend reminded me of a glaring issue with one of its stations -- 90s on 9 (or, music from the 1990s, on the 9th channel of Sirius/XM 1). The issue, dear reader, is that the 1990s presents too-diverse of a line-up to provide a coherent listening experience. The aforementioned issue (opinion?) isn't a new one. I can remember sitting at my friend Terry's apartment, circa 1997, when he remarked upon the diversity of Top 40 radio for the decade. I consider Terry to be somewhat of an authority when it comes to the world of music, and so what he said carried some weight. I thought about it, and