This song is 60 years old. It was written in 1947 by Edin Ahbez, and has since been sung
some 50 famed singers, including Nat King Cole, Frank Sinatra, John Lequizamo (for the
Moulin Rouge!) and Leonard Nimoy. It has been played by many instruments, but listening 
a radio I overheard an unnamed musician playing this on the acoustic guitar. The song
from 1951.
I tabbed it out and here it is, as my band plays it, with little difference from the
version.

             D°7
e|1---------------------------|
B|0---------------------------|
G|1---------------------------|
D|----------------------------|
A|----------------------------|
E|----------------------------|

              C7
e|----------------------------|
B|1---------------------------|
G|---2------------------------|
D|-----3----------------------|
A|---2------------------------|
E|----------------------------|


MENTALITY
Nature Boy


Fm
There was a boy
A#m
very strange
   Fm          A#m
enchanted boy
                      Fm  A#m
they say he wandered very far
Fm    A5  A             G
very far over land and sea.

    C7                  Fm
A little shy and sad of eye
         Dº7      C7
but very wise was he.

Fm               A#m
And then one day
               Fm             F#m
a magic day he passed my way
                       Fm    A#m
and while we spoke of many things
Fm         A5     A              G
fools and kings, this he said to me....

             C7
The greatest thing
             Fm
you'll ever learn
    Dº7     G            C7       Fm
is just to love and be loved in return.