It happens with songs, but also with everything else.Scientifically speaking, I was once talking to someone big in this field, and he told me that there is enough evidence to support the idea that associative memory and conditioning apply to all sensory stimulation... and these are tied very intrinsically with emotional responses.In fact, come to think of it... There is this very famous passage that everyone studies in French class (from a much bigger novel that nobody reads). It was written by the novelist Marcel Proust, and was basically about how eating a cake (a madeleine actually) dipped in tea evoked a deluge of memories. 😆For me, the equivalent of the madeleine will be the humble roti. I can't make them... 😛... So, the only time I get to eat them is when I go back home.