McCartney:
1. Something early, like "Uncle Albert" from Brick 4, or "Maybe I'm Amazed," or "Junior's Farm"
2. "Helen Wheels," or "Nineteen Hundred Eighty Five" from Band On The Run
3. "Magneto and Titanium Man," "Medicine Jar," or "Call Me Back Again" from Venus & Mars
4. "Take It Away," "Ballroom Dancing," or "Wanderlust" from Tug Of War
5. something "later," like "Hope Of Deliverance," "The Song We Were Singing," or even "Biker Like An Icon"

Lennon:
1. Gotta be "Imagine"
2. "Whatever Gets You Through The Night"
3. "Instant Karma"
4. "Nobody Told Me," "Woman," or "Watching The Wheels"

Harrison:
1. "My Sweet Lord," or "What Is Life" from All Things Must Pass
2. "Give Me Love, etc." or "This Song"
3. "Crackerbox Palace"
4. "All Those Years Ago"
5. "Devil's Radio," "When We Was Fab," or even "Got My Mind Set On You" from Cloud Nine

Starr:
1. "It Don't Come Easy" or "The No-No Song"
2. "Photograph," or "You're Sixteen"

You could even add "Free As A Bird" or "Real Love"

Ok, I know that's more than 15 - but I was just thinking aloud.

What a concept! What do you think?

I think that disc would be a good seller.

I know it's easier and more financially viable for SC to use songs compiled from other releases, but there's SO much stuff to choose from it would be a shame not to release new songs.