Very true HS. That said much marketing is not just about telling you about a product, it is also about ensuring you have an appetite for that specific product when you find it, and that when you are more likely to like it. Marketing hype is more successful at helping you find it, with an appetite, than it is at actually making you like it... the latter depends on whatever is being promoted being close to living up to that marketing hype. If it is, the hype is accepted, if not the hype and product can be forcefully rejected.
Music is an interesting specific product as generally listeners have heard the song several times before they get a chance to buy it. Often having heard specific parts of the song (usually the chorus) many times. With music, the fans not only buy into the song, they buy into the image. The point being that at the time of purchase the satisfaction for the masses is down to both the song and the image. For that satisfaction to continue, both the song and the image need to be enduring, and memorable.
The point is that different aspects of a song, the artist, and their marketing, affect different phases of the popularity of the song and the artist. Reptition is a key part of a song and it's marketing delivering a message to the listener. The more plays, in the right places and at the right time do have a huge effect.
There does come a point, also, where both the song and the marketing can reach a point of saturation that will result in fans switching off, not on, to the music. The point where people become sick listening to a song because it has been played so often.
It's not straightforward, completely predictable, but today's music marketers have it down to a fine art.