Paul McCartney 15 must hear tracks:

[CRAZY-HORSE]

Wiki:  https://en.wikipedia.org/wiki/Driving_Rain

the seocnd track ive posted from 2001's Driving Rain album.
Rinse The Raindrops a 10+ minute rock jam, 
full of backwards guitars, primal screams Yoko would be proud of and continual tempo changes.
another description is the chaos of Helter Skelter meets Crazy Horse jamming...
another track most wouldnt recognise as a McCartney project,
was a epic conclusion to the album before the secret track kicks in.
i also see it as his way of releasing all the emotions of losing Linda (anger, frustration, sadness, hurt)
can almost imagine him screaming "i got blisters on my fingers" at the conclusion of it.






Rinse the raindrops
From your head
Wipe your eyes
Go back to bed
In the morning
Skies`ll clear
And I`ll be here

See the sunlight
Break the ice
For the birds of paradise
Listen to the song they sing
Awakening