*AllanSlaight (1931–2021) founded @SlaightCommunications as *SlaightBroadcasting (1970) after returning to @Toronto 1967. With investors like *GordonLightfoot bought @CFGM 2nd mortgage on his house. 1972 bought @CFOXAM & @CHOK in 1973.
After 1971 Canadian content regulations (25% on air) @CKLW declined but still *RosalieTrombley broke *AnneMurray*GordonLightfoot*JoniMitchell*GuessWho*AprilWine*BTO songs in US. FM radio rose 1970s. Canada at first didn't license FM to rock.