''I Feel Fine''by the Beatles, who does the lead ?

Maybe Carl Perkins as on Honey Don't or Everybody's Trying To Be My Baby? But if it has to be one of the Fabfour it's George 'picker' Harrison.

RV, are you trying to say that Perkins provided those vocals? I know that he wrote both songs, but weren't the lead vocals Ringo on "Honey" (John does the lead on some BBC versions) and George on "My Baby"?

4yanx: nope, simply addressing the question who plays lead guitar. Check out this Perkins link:

http://www.rockabillyhall.com/CarlPerkins.html

It cites Perkins touring England in 1964. Did George Martin use him on some sessions? It wouldn't surprise me. In any event Harrison was a great admirer of Perkins. The picking on I Feel Fine bears some resemblance to the more countryfied feel of the Perkins tunes covered by the boys during the same period. I doubt frontman Lennon could have been bothered to learn the intricate patterns on I Feel Fine: interferes with me singin' don't ya see?

With respect to Sunshine: Rosstaman is correct-Bruce sings the first and third phrase in each verse, Clapton the second. Even on my lousy Zenith record player you could hear the different timbres of the voices, and that's how they sang it in concert as well.

With respect to the lead guitar in I Feel Fine, I had always thought it was George as well, but the part was not that hard to play for a rhythm guitarist (I know, cuz I was able to play it), so it could have been John, at least the opening riff. Certainly not the guitar solo in the middle, though--that would be a lead guitar part, as stated on the album.

I think it was Mr Martin!