"That song strikes me as a perfect reflection of my life" would be idiomatic in your example. When we look in the mirror, we see "a mirror image," hopefully a perfect reflection. We also have the meaning as in "reflections on immortality," which could be a collection of thoughts and ideas about a subject.
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S.P.I.".. that song strikes me as a perfect reflection of my life."He is saying that listening to the song is like looking in the mirror and visualizing his life.