Admittedly the songs he plays are by definition pre-1976 ( he calls his show The Obsolete Music Hour) but Dick Spottswood (WAMU public radio) plays 2 solid hours of nothing but train songs once a year. It used to be 3 hours, when his show was 3 hours long. Now he talks about how he has to leave so many out. What he plays the rest of the year is also great.