Songs that brings back memories...

what are the songs that the moment you listen to it...
memories start to flash through your mind... ???

graduation songs...
songs that you once listened together with the one you loved...
songs that you sang for your love ones...
esp the songs you listened when your relationship just ended...
even now when i listen to certain songs...
it felt like it just happened yesterday...
and its so hurt... so disheartening...
and asked myself, if i could do better...

i have many regrets in life...
i really hope someone great will invent a time machine...
20 yrs back is all i wished for...