Perfect Pop Songs

Those with the kind of music, lyrics, performance, arrangement and production that you could easily repeat all day.

How about starting with this one? Somewhat outside of her usual cannon and none the worse for it. Perhaps also a contender for the sexiest vocals ever?

Louie Louie  by Julie London
Almost all McCartney songs in the first three years are the very epitome of the pop song.  Simple, catchy, short.  The SQ of the original records is not bad either.

Annoyingly they can stick in your head for days on end.
After 60 years in the game, McCartney is the archetypal pop composer.
My criteria for this subject is what songs are so good (in all or most of the five areas the OP mentions) that you cannot become tired of it, even if it was massively overplayed. The first few songs that immediately came to mind were:

Tired of Waiting - The Kinks
Nothing But a Heartache - The Flirtations
There She Goes - The La's
All I Want - Toad The Wet Sprocket 

Kudos for mentioning Emmitt Rhodes, along with Don Dixon & Marti Jones; so, I'll add:

"Praying Mantis" & I Can See the River" - Don Dixon
"Walk Away" & "Tourist Town" - Marti Jones  
This morning’s offering:

Kelley Stoltz - "Are You My Love"