Written by Don Everly, this song is another one of those sweet heartache songs the Everly
Brothers did so well.  
For the most part it's a standard I VI ii V progression in the key of G. 
The song starts with the Refrain which has a "pickup" wherein Don and Phil use their 
voices to simultaneously arpeggiate a C major chord.  Once voice begins on E, and the other
on G.  I've tried to indicate this as such, but this is the first tab I've ever done.
I hope it's not too confusing. 
Chords are shown on top of the words they time out with.  Chords in parentheses are 
carried over from the previous measure.
Though I didn't notate the melody, you can pop on the record and use this chart to strum
along. I found it on their "The Complete Cadence Recordings 1957-1960" CD 
collection which is worth it's weight in gold.
*****************
"Oh, What a Feeling"
by Don Everly 
[Refrain](vocal arpeggios} E---G---CG---C---E		It  must be G     Em    C	Dlove	         Oh, what a G	Em   C   Dfeeling!
[Verse #1]
G        C     G
I sit at home alone
G          G7      C
I wait here by the phone
D	      G     Em  C  D
I know you'll never call
(D)	   G	   Em	G  G7
Oh, what a feeling!
[Bridge]
C	   G	 Em	
It must be love
C	      G
Although it's bitter
C	   G	 Em 	
It must be love
A7	  D7   C	   
I can't forget her
[Verse #2]
G	      C    G
The days turn into weeks
G	     G7        C   
You're letters I shall keep
D            G      Em   C   D
The ones you didn't write
(D)	 G	 Em     C
Oh, what feeling!
(vocal arpeggios} E---G---CG---C---E		It  must be G     Em    C	Dlove	         Oh, what a G	Em    C (No D chord here)   feeling!
(vocal arpeggios} E---G---CG---C---E	It  must be G     Em    C	Dlove	         Oh, what a G	Em    feeling!
G   Em    
G   Em  (repeat and fade)