Just thought I'd try to search to see if Chet Atkins did a version, since I know that he was a big influence on George's early style.
And it turns out he recorded it for his 1960 album Teensville.
http://en.wikipedia.org/wiki/Teensville_%28Chet_Atkins_album%29You can listen to it here ....
http://mp3skull.com/mp3/chet_atkins_till_there_was_you.htmlThere's still no guitar part like George's solo, but it is getting quite close, so you can imagine George learning the Chet Atkins guitar parts and filling in some parts himself to create the lovely solo we hear on With The Beatles. And if you couple that with McCartney knowing the Peggy Lee Latin-influenced version, then it sort of completes the picture of how the song was arranged by the Beatles.
Of course, they were already playing a very good version of the song in early 1962, as can be heard in the Decca audition, and in the Star Club recordings from the end of that year, so the version on With The Beatles had been in their live set for almost two years by the time of the final studio recording.