Paul McCartney: What are the best deepest (rarest) cuts?

I love Paul McCartney's work as a solo artist (and including Wings here too). I have collected his work since I was a young boy in the early 80's. I have many copies of his main albums, for example. Nevertheless I am not one to go in for collecting every single recording (I'm just not that type of fan) although that is no slight on those who have collected the massive Archive box sets for example.
A deep cut (rare) can mean different things to different people based on relative knowledge of the artist and degrees of fandom. For the sake of this thread a deep cut can mean any track that is off the well beaten path. Normally that means tracks not on the regular, studio albums but might include different versions of those tracks.
I'm curious whether there perhaps is more McCartney that I should explore.
Artistic merit (again, a vague subjective term) is the keynote to this thread. Part of me wonders whether there are some gems still left to hear but also I thought it a good place to select those tracks worth seeking out amidst a now large solo catalogue. I hope this thread to be helpful to others too who might know a lot of what Paul has done but by no means have a fully comprehensive catalogue of his work.
I thank posters in advance for their precious time in contributing

 

Early 2000s contribution to an Ian Dury tribute.

 

An early 2000s animation project, possibly to be reprised at some point in the future.

 

From the Off the Ground era.

 

I think when it comes to deep cuts so to speak, subjectivity plays more of an even larger role than ever, because these are the bits that have rarely been praised by others, and the discovery of a relatively rare gem for oneself can be a rather personal experience.

That being said, I'm a big fan of a few numbers that were recorded but not released (yet) back around the time of Red Rose Speedway, like this sublime and mellow cover song arrangement:

 

Basically, once you get into the CD single era, you have some rarities out there, in the sense that (a) they were officially released but (b) they don't (yet) appear on official album re-issues. A visit to youtube discovers that fact that Flaming Pie-era b-sides have been removed, for reasons we might speculate about (notably: a forthcoming large re-issue of Flaming Pie material).

 

From the Flowers in the Dirt era, a co-write with Elvis Costello:

 

Thanks Rob. I've played this a couple of times sat out in my garden this evening. First time I've heard this track so a great example to start the thread with.

 

From the Memory Almost Full era

 

I know this one from buying the original 2LP that Paul planned for RRS.
One of my favourite Paul discoveries in the last few years so with you on this.

 

Twin Freaks era, borrowing elements from Back to the Egg:

 

Summer of '59

 

"Tommy's Coming Home" from the FLOWERS IN THE DIRT era
"Daytime Nightime Suffering" (B side of "Goodnight Tonight")
The MCGEAR album is basically Wings backing up Paul's brother Mike and it is very good!

 

There are so many of these deep cuts, often they are superior to the tracks we all know.
Paul's demo of 4th of July left me stunned when I finally heard it.

 

A beautiful song from the „Memory Almost Full“ sessions not on the regular album.

 

Already mentioned but worth repeating:

Daytime Nighttime Suffering

 

Wow...I'm loving this. Never heard it before.
Getting a massive thumbs up from my partner as well.

 

It is great. I have the 12 inch single. Wonderful stuff!

 

Thanks for sharing this. I’d never heard this before and i’ve just had it on repeat for the last 20 minutes.

 

His last song of the 2010's, and to my mind his greatest one:

 

"Hanglide"!
Proto-"Fireman"!

 

Here are a few more:

Paul and the Hollywood Vampires playing “Come and get it” from 2014/15ish. A song Paul wrote in the 1960s.


“All of me” - Paul’s duet with Eric Clapton from 2013ish
YouTube

“Heal the pain” Pauls duet with George Michael from 2005/2006ish I think
Heal The Pain - George Michael & Paul McCartney

“In the Blink of an Eye” from the ‘Ethel and Earnest’ film soundtrack
Paul McCartney - In The Blink of an Eye (audio)

“It’s so easy” Buddy Holly tribute album from 2011 -version 1
It's So Easy

“It’s so easy” version 2 (the slow version)
It's So Easy

Paul and Steve Martin “my best love” from 2013
Steve Martin & The Steep Canyon Rangers - "Best Love" (featuring Paul McCartney)

Paul and Bloody Beatroots ‘Out of Sight’ 2012 (originally from the Firemen album in 2008)
The Bloody Beetroots feat. Paul McCartney and Youth - Out of Sight (Official Video)

 

Kerri Chandler working his magic. Wish I had this on vinyl.

 

Yeah those Flowers In The Dirt demo’s where brilliant, Tommy’s Coming Home, Twenty Fine Fingers and So Like Candy some of my favourites.