who is he?
He is an English singer, songwriter and musician.
Ray Davies
Sir Raymond Douglas Davies, ( ; born 21 June 1944) is an English singer, songwriter and musician. 
who wrote the song you really got me Ray Davies
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Ray Davies [SEP] Introduction
Sir Raymond Douglas Davies, ( ; born 21 June 1944) is an English singer, songwriter and musician. He is the lead singer, rhythm guitarist and main songwriter for the Kinks, which he leads with his younger brother, Dave. He has also acted, directed and produced shows for theatre and television. He is often referred to as "the godfather of Britpop". After the dissolution of the Kinks in 1996, Davies embarked on a solo career.