Song chart Canada
We would rather use the "Records, Promotion, Music" (RPM) chart, which were national rather than this local one. However those charts are not available in a usable form (raster scans of the RPM weekly charts are at www.collectionscanada.gc.ca/rpm/index-e. html.
The attributes we use from this data are:
There are a wide range of ways to assign scores to artists in order to work out which artists are most significant. Here is one listing, of the top five artists of each decade within the CHUM chart. This has been calculated using a score that combines the position and the number of weeks in the charts.
If we want to compare artists across the years we need to remove the systematic bias that comes from the different chart sizes for different eras. We can do that by first ording all the songs by success within a given year and then using this order to define a score (for example assigning 1.0 to the number 1 song, 0.5 to the number 2 and so on).
A number of song titles have been hits for more than one artist. Here are the twenty titles that have spent the most weeks in the CHUM charts.
The peak position that songs reached in the CHUM charts.
The month in which a song first entered the CHUM chart.
The number of weeks that the average song spends in the CHUM chart has changed quite dramatically over the years. We have no good idea why this should be.