This is well over a decade old, but it's the first time I've come across it. It's a Toronto musician's ode to the long gone 1050 CHUM and what the station meant to him. Jaimie Vernon used his past emotional connection to the legendary Top 40 rocker to write a gentle song and put footage of the Nifty 1050 in a YouTube video. 

According to the page on the site:

"Dear Chum" is an ode to the Toronto, Canada radio station 1050CHUM AM (1957-2009) and is from the album 'Nightmare @ 20,000 Watts' [Radio Edition] about the fictitious final hour of broadcasting from the last Top40 radio station in North America. It's a walk down memory lane of styles and even contains cover tunes of some classic AM pop tunes. Available at iTunes and features song intro and outtros by Bob "The Iceman" Segarini as the fictitious Mike MacKenzie and radio station C.A.S.H.

With the annual anniversary date of CHUM's switch to Top 40 coming at the end of the month (May 27, 1957), 2023 will mark 66 years since that moment literally rocked Toronto. I like the song and it's kind of a nice tribute.