A new audience recording of Rush's October 24, 1974 show at Toronto's Massey Hall opening for Nazareth surfaced online earlier this week on the Rush Archives YouTube channel. It was Rush's first show at Toronto's iconic Massey Hall, and this previously uncirculated bootleg includes the band's first ever live recording of Anthem as detailed in the video description:

... This show features the earliest known live recording of Anthem, and Geddy states it was "written about a week and a half ago". It's possible to consider they may have waited to debut the song live during their homecoming in Toronto, however Geddy doesn't suggest it to be their first time playing it. Otherwise, the song would've only been played live no more than six shows prior to Toronto. If you listen closely, parts for bass, guitar, and drums are all slightly different compared to the more polished versions we will already hear later in 1974. Prior to obtaining this tape, we had no evidence that Anthem was played this much earlier than the November 19 Seattle show. Unique playing during the jam section of Working Man can be heard in this show, notably sounding a bit different than all other 1974 live versions we have. Early pieces of By-Tor And The Snow Dog can also be heard during the middle section of Working Man, as usual for 1974 shows with Neil. Prior to Working Man, Geddy addresses their Toronto fans who are already familiar with the band: "Before we end off tonight, a number of you have seen the band before, so you may notice a new face in the band. We'd like to feature our new drummer for this next tune, Neil Peart."

You can listen to the show below or on YouTube.