The Real Wizard wrote:
But what we *can* say is that it was the first song on their first album, and this was the first exposure to Queen for countless people.
It sounds poetic but I'd quibble it's not too realistic... a few thousand people heard, let alone bought, the first single and album. The hundreds of millions who have been exposed to Queen may have first heard something else and then (some of us) explored their roots, including the debut album.
The 'Queen' LP failed to have significant sales and only reached its first 60,000 local shipments on the 1st of November 1974 ... it makes sense to think that those new buyers had been drawn into Queen because of the 'Killer Queen / Flick of the Wrist' single and news of the band's upcoming British tour, which means their first exposure to Queen was definitely not 'Keep Yourself Alive.'
It was certified gold (which at the time meant 100,000 shipments in Britain) on the First of May 1976, which again means the further 40,000 sales (between November 1974 and April 1976 - a year and a half) were more likely to have been a result of people being exposed first via 'Killer Queen' or 'Bo Rhap' (or, album-wise, 'Sheer Heart Attack' or 'A Night at the Opera') rather than the debut.
Same for America: the first album completed its first million shipments there on the 29th of March 1977 (soon after the 'Races Tour' had had its American and Canadian dates). We can strongly suspect a large percentage of that million had been exposed to Queen first via 'Bo Rhap', 'Best Friend' or 'Somebody to Love' or after attending a gig, and then decided to explore earlier material.
For countless people, the existence of Queen was only discovered after they'd released three or four albums, and they only heard KYA (plus other songs such as 'Liar') in retrospect. For everyone of the few thousands who heard the debut album back in Summer '73, there are millions who only found out about it way later.