Many of today's new recordings sound really grungy, and many 1960s and 1970s recordings sound very clean when they have been remastered by people like Bill Inglot. You can't generalize about sound quality, but the main difference on AM has to do with processing and equalization. Some of the worst recordings today have very little bass, whereas older vinyl recordings, if they are put through a good preamp with proper preemphasis, sound very good and have lots of bass. Kids dealing with what they think is a throwaway oldies format often don't even know how the recordings are supposed to sound, and don't know what they are doing when they make files to be played on hard drive based oldies formats that sound tinny and grate on the ears of older listeners as well as young.
There is a wildy successful following for some of the most obscure 1960s and 1970s songs in the Northern Soul casinos and dance clubs in the UK. Look up Northern Soul Top 500 Of All Time to see how obscure. They are almost all familiar artists, but obscure tracks that may have received local and regional airplay in the US.
You could easily create a local type format for AMs pushing regional hits on AM or a suburban FM that would be successful. There are websites online that recreate the WLS and WCFL experience also.
There is a wildy successful following for some of the most obscure 1960s and 1970s songs in the Northern Soul casinos and dance clubs in the UK. Look up Northern Soul Top 500 Of All Time to see how obscure. They are almost all familiar artists, but obscure tracks that may have received local and regional airplay in the US.
You could easily create a local type format for AMs pushing regional hits on AM or a suburban FM that would be successful. There are websites online that recreate the WLS and WCFL experience also.