There are also a lot of really good recordings that were obscured by the Psychedelic Era, and the lack of promotion by and eventual demise of many independent record labels. You can see it in the "Regional Hits", by looking at ARSA Surveys. Now there are very few record labels, and radio formats and playlists are dictated centrally by huge broadcasting conglomerates. But a Rick Sklar thumbs down could also take a potential #1 down to #61, just by losing airplay on those 7 AM and 7 FM ABC owned stations in the 1970s. I really miss locally programmed stations. But those college stations that are day-parted into those 15 minute DJ "shifts" aren't that good either. But looking at some Carrier Current station charts from the 1960s and 1970s, they are more imaginative than many stations today.