Song that fits the Movie it's in

If a song's words in a movie ever caught me for fitting right like a puzzle piece in a movie, I could not pick just one. I would have to praise the use of all Cat Stevens songs in the movie Harold and Maude (1971). The plot of that movie must have been very new and unsettling for audiences at time. A 18-year-old boy that has wealth but is very unhappy and obsesses over death, then finds happiness dating a 80-year-old woman. The music sings of tales of youth, independence, personal expression, and passing phases. But, there is also wisdom and hope in the lyrics that the boy is looking for, reassuring the audience in each scene that there is some kind of reward coming soon. Also, if it were not for the joy and passion in the music, the movie would have no way to coax repeat viewings from so many cult watchers. This formula is alive to day. It is this way that movie makes the strange beautiful thought the right music that surely is the source for all Wes Andersen's inspiration.