Sometime during 1964
The Kinks  
People involved
The Kinks, i.e. Mick Avory (drm); Dave Davies (gtr/vcl); Ray Davies (vcl/gtr); Pete Quaife (bss); plus some sessioners incl. Jon Lord (kbr) and Jimmy Page (gtr).
The Kinks felt they needed some musicianship on their early recordings and thus invited some sessioners. Hence Jon Lord came to play piano on "You Really Got Me"! He probably plays organ on "Bald Headed Woman" and possibly also "Long Tall Sally" and "Lover Not A Fighter". Not all sources agree on Lord's contributions to this album though. Some claim he played piano and organ all over it, while others say he played piano on "You Really Got Me" and nothing else. Perhaps he played more than what was eventually ended up being released.

Albums & singles
Long Tall Sally/I Took My Baby Home : UK Mar 1964 Pye 7N 15611
You Really Got Me/It's All Right : UK Aug 1964 Pye 7N 15673
Kinksize Hits [ep] : UK 1964 Pye Records NEP 24203
The Kinks [lp] : UK Oct 1964 Pye NPL 18096
The Kinks [cd] : Germany 1987 PRT Records 8.26670 ZR
The Kinks [remastered cd; extra material] : UK 1998
You Really Got Me [lp] : US 1964 Reprise Records 6143

Material from above appears on...
You Really Got Me (Best Of) [2cd] : Germany 1994 "edel company"
The Kinks Remastered [3cd] : UK 1995 Castle ESB CD 268/DISK 1-3