From Proust

Often one hears nothing when one listens for the first time to a piece of music that is at all complicated. And yet when later on, this sonata had been played to me two or three times I found that I knew it perfectly well. And so it is not wrong to speak of hearing a thing for the first time. If one had indeed, as one supposes received no impression from the first hearing, the second, the third would be equally "first hearings."