A perfect song? What are your choices?

"Peg" by Steely Dan.

Sandy Denny - Who knows Where The Time Goes

Joni Mitchell - Urge for Going

AND

Ewam McCall - The First Time Ever I Saw Your Face( a love song written by Ewan for Peggy Segar, Pete's sister, for the woman he spent his life with).

“Pancho and Lefty”  

Written by Townes Van Zandt. 

Favorite/ best version is by Emmylou Harris. 
 

Thank you, serjio! Seriously. 

Here's another from the Slavic world (sort of!):

@snilf I looked on the Internet - this is a group from Croatia - they sing the Iron Maiden repertoire (heavy metal) ...

What is the perfect song? : beautiful melody + deep lyrics + excellent vocal skills ...
Each person’s sense of beauty can drift on a scale both to the right and to the left ... an intelligent person knows (understanding comes with age) that it is VERY beneficial for us to move towards God (health, joy, meaning, happiness, realization, peace for all) ...
In our youth, almost all of us are stupid - no experience ... puberty, rebellion, hormones, bad company ... - as a result, we lose valuable time and often listen to things that harm us ...

I don’t know how to make a child fall in love with, for example, classical music and get a huge advantage on the path of life ... the bulk of people will lose time and harm themselves (then they will bite their elbows) ... Probably you need to at least know this in advance and make attempts!