I saw a ghost!

I feel like I just saw a ghost.
If I were to describe what he looked like, he had blonde hair and red tinted glasses. He had his right ear pierced. I was freaked out at first. I saw it as a misconception.
The next day, I saw him again! I swear he was the same as he was with his blonde hair and red tinted glasses. I googled "paranormal blonde hair, red tinted glasses", but nothing showed up. I thought I was just going insane and hallucinating things. I thought I was paranoid and wrote this event down as an illusion. All smoke and mirrors.
Until, 5 days later, I left my computer for something to eat when I came back to an open document. I didn't write this and it wasn't something I was really familiar with. It was just the letters:
"Elt"
I thought of it as some random shit I did by smacking the keyboard. 
But then, later I saw that it opened up another word document after leaving my computer and this time it said:
"Elton"
It saved it in my computer as "Elton" but I was weirded out to see why it was called "Elton". It's quite a coincidence how I accidentally typed this.
2 days later, I find a audio recording of some random distorted singing or something. I transcribed what I could and all I could pick up was this:
"IT'S GETTIN' LATE
HAVE YOU SEEN MY MATES
MA, TELL ME WHEN THE BOYS GET HERE
IT'S SEVEN-O-CLOCK AND I WANT TO ROCK
WANNA GET A BELLY FULL OF BEER 
MY OLD MAN'S DRUNKER THAN A BARREL FULL OF MONKEYS
AND MY OLD LADY, SHE DON'T CARE
MY SISTER LOOKS CUTE IN HER BRACES AND BOOTS
AND A HANDFUL OF GREASE IN HER HAIR 
SO DON'T GIVE US NONE OF YER AGGRAVATION
WE'VE HAD IT WITH YOUR DISCIPLINE
SATURDAY NIGHT'S ALRIGHT FOR FIGHTIN'
GET A LITTLE ACTION IN 
GET ABOUT AS OILED AS A DIESEL TRAIN
GONNA SET THIS DANCE ALIGHT
'CAUSE SATURDAY NIGHT'S THE NIGHT I LIKE
SATURDAY NIGHT'S ALRIGHT, ALRIGHT, ALRIGHT 
WELL THEY'RE PACKED PRETTY TIGHT IN HERE TONIGHT
I'M LOOKIN' FOR A DOLLY WHO'LL SEE ME RIGHT
I MAY USE A LITTLE MUSCLE TO GET WHAT I NEED
I SINK A LITTLE DRINK AND SHOUT "SHE'S WITH ME!" 
A COUPLE OF THE SOUNDS THAT I REALLY LIKE
ARE THE SOUND OF A SIXPACK AND A MOTORBIKE
I'M A JUVENILE PRODUCT OF THE WORKING CLASS
WHO'S BEST FRIEND FLOATS IN THE BOTTOM OF A GLASS 
NO, DON'T GIVE US NONE OF YER AGGRAVATION
WE'VE HAD IT WITH YER DISCIPLINE
SATURDAY NIGHT'S ALRIGHT FOR FIGHTING
GET A LITTLE ACTION IN 
I GET ABOUT AS OILED AS A DIESEL TRAIN
GONNA SET THIS DANCE ALIGHT
SATURDAY NIGHT'S THE NIGHT I LIKE
SATURDAY NIGHT'S ALRIGHT, ALRIGHT, ALRIGHT
TAKE ME TO THE PILOT
LEAD ME THROUGH THE CHAMBER
TAKE ME TO THE PILOT
I AM BUT A STRANGER
TAKE ME TO THE PILOT
LEAD ME THROUGH THE CHAMBER
TAKE ME TO THE PILOT
I AM BUT A STRANGER
NAH, NAH, NAH
NAH, NAH, NAH
NAH, NAH, NAH...NAH, NAH, NAH, NAH, NAH
NAH, NAH, NAH
NAH, NAH, NAH
NAH, NAH, NAH...NAH, NAH, NAH, NAH, NAH 
SATURDAY, SATURDAY
SATURDAY, SATURDAY
SATURDAY, SATURDAY
SATURDAY, SATURDAY
I CAN'T WAIT FOR SATURDAY
SATURDAY, SATURDAY
SATURDAY, SATURDAY
SATURDAY, SATURDAY
SATURDAY NIGHT'S ALRIGHT, ALRIGHT, ALRIGHT!"
I was shivering in my seat when I heard this horrifying message. I shut off my computer and never returned to it.
But, I decided to open it up again.
A really bad idea.
What I saw next was an image. I don't understand how it got there, my computer had been turned off! But, the really creepy part... the ''really ''creepy part about this is that it was that ghost. That person I saw! The blonde hair and the red tinted glasses.
I also found the word document "Elton". It was modified. I opened it up only to have made the biggest mistake. It said:
"Elton John"
My heart skipped a beat. I don't know how I go on.
I really hope this is the end of it all. I hope this doesn't carry on. I'm being driven insane by this. All I hear in my head. On a constant loop, is the horrifying phrase:
"saturday night's alright for fighting"