This is a charming arrangement for 4 guitars (or large ensemble) which is in the same key as the Louis Armstrong song in On Her Majesty's Secret Service and contains the Flugelhorn solo of the original.
There are TWO versions of the tune in the one edition - one at Louis Armstrong pitch (ideal for larger groups which can put extra players on the line, so it cuts through) and one an octave up, which sits above the accompaniment and is better with one player per part.
The arrangement also contains a guitar part which provides the decorative "strings" motif in the original and also pays homage to the acoustic guitar part.
You can hear a snippet and see some of the score on the SMP website
Here's a link to an easier trio arrangement I've produced - ideal for less-experienced players