Paul McCartney's complete 'Kisses on the Bottom'-era output has been collected in one special deluxe collection titled 'Kisses on the Bottom -- Complete Kisses' that is now available exclusively online via the iTunes Store.

The set features the original 'Kisses on the Bottom' album alongside McCartney's recently completed 'Live From Capitol Studios' concert performance and four bonus tracks, including his recently released 'The Christmas Song' that is part of the Starbucks 'Holidays Rule' compilation.

Of particular interest is the 'Live From Capitol Studios' set, which the singer recently revealed almost didn't happen. He told The Sun newspaper that his insecurity about working with a group of jazz musicians almost got the better of him and he considered calling off the project. He explained, "It was frightening. The very first day was the worst because I didn't know anyone. I've been with a band, we've been together for 10 years, and suddenly I'm the new boy. When I was trying the songs out I had been using a much more full voice -- kind of like a Rat Pack style. I suddenly realized I was doing an impersonation."

McCartney goes on to add, "There was a moment of panic in the studio actually on the day. I suddenly thought, 'This isn't going to work. Oh f---. The band are listening to me, and they are jazz players who have worked with good people.' It was a moment of insecurity and I was out of my element."

As for the bonus cuts, in addition to 'The Christmas Song,' other newly added pieces to the deluxe edition include a previously unreleased version of 'My Valentine,' along with 'Baby's Request' and 'My One and Only Love.'

The 'Kisses on the Bottom -- Complete Kisses' collection can be purchased online here.

Paul McCartney's 'Kisses on the Bottom -- Complete Kisses' Track Listing
1. 'I'm Gonna Sit Right Down and Write Myself a Letter'
2. 'Home (When Shadows Fall)'
3. 'It's Only a Paper Moon'
4. 'More I Cannot Wish You'
5. 'The Glory of Love'
6. 'We Three (My Echo, My Shadow and Me)'
7. 'Ac-Cent-Tchu-Ate the Positive'
8. 'My Valentine'
9. 'Always'
10. 'My Very Good Friend the Milkman'
11. 'Bye Bye Blackbird'
12. 'Get Yourself Another Fool'
13. 'The Inch Worm'
14. 'Only Our Hearts'
Bonus Tracks
15. 'The Christmas Song (Chestnuts Roasting on an Open Fire)'
16. 'Baby's Request'
17. 'My One and Only Love'
18. 'My Valentine' (Johnny Mandel Original Arrangement)
Live From Capitol Studios
19. 'I'm Gonna Sit Right Down And Write Myself A Letter' (Live)
20. 'Home (When Shadows Fall)' (Live)
21. 'It's Only a Paper Moon' (Live)
22. 'More I Cannot Wish You' (Live)
23. 'The Glory of Love' (Live)
24. 'We Three (My Echo, My Shadow and Me)' (Live)
25. 'Ac-Cent-Tchu-Ate the Positive' (Live)
26. 'My Valentine' (Live)
27. 'Always' (Live)
28. 'My Very Good Friend the Milkman' (Live)
29. 'Bye Bye Blackbird' (Live)
30. 'Get Yourself Another Fool' (Live)
31. 'My One and Only Love' (Live)

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