Okay replacing the sudden unexplained change of Top Hits changing from published sheet music to recordings in  I gave all the years from  in music through  in music seperate Top Hit Songs Printed and Top Hit Recordings categories which seems to reflect the gradual shift in the driving forces of the music industry More work needs to be done and Id like to extend the Hit Records category back a few more years if I can find decent data Im still gradually cleaning up the categories     Jun  UTC