For nearly 30 years, the CHUM chart, published weekly by 1050 CHUM AM in Toronto was THE way that young Canadians discovered popular music. The amazing Chum Tribute site has an online archive of every CHUM CHART.
In 1962 and 1963, American Bandstand host Dick Clark was a DJ on 1050 Chum (sort of). He would tape his segments of the show (including his half of banter with Toronto DJs) in Los Angeles, mail the tapes to Toronto where the show would be completed and edited together. You can find out more about this process on the Torontoist blog.
Although the live/broadcast and concert with Al Boliska, Dick Clark and Franki Valli is completely ficitionalized in the Episode 14 of Time for the Fair, Dick Clark and Franki Valli were indeed at the CNE on August 21, 1963 according to the CHUM CHART for August 19, 1963.
I found a medley of Franki Valli and the Four Seasons songs from the Mid 1960s on youtube.