[Verse 1]
When I was a boy, a student at Hogwarts
I paid attention to my studies not Quidditch or sports
And then a boy James Potter always picked on me
Playing games and calling names like Snivellus Snape

Years later became a teacher, master of the Dark Arts
And I learned of James's death killed by Lord Voldemort
Also killed Potter's wife her name was Lily
Only one to survive was their child named Harry

They said he's the chosen one, eventually in my class
Chosen by Gryffindor he was a pain in my ass
He was famous for surviving the spell for killing
But clearly fame isn't everything

[Chorus]
Professor Severus Snape, with his long black cape
Head of Slytherin, house of the snake
And Half-blood Prince, Professor of Defence
Potions Master at Hogwarts
He's not a pleasant man, and he seems like he's bad
Picking on Harry Potter in front of the class
And, though they debate, he would do what it takes
To protect this place, he's Severus Snape

[Verse 2]
Dumbledore and McGonagall were fond of Harry
Plus he had his friends, Hermione and Ron Weasley
Still, there were some that didn't like him like me
There was Lucius and his son Draco Malfoy

However, I'll admit things started to get weird
Ever since Harry Potter started attending class here
Professor Quirrell let in a troll at Halloween
Never trusted him again

Then at the Quidditch game
Harry's broom was bewitched, it was Quirrell I could see
And I muttered a counterspell but his friends thought it was me
They set fire to my cloak, but his concentration broke
And Harry ended up catching the Snitch and winning the game

Later on we found he was helping the Dark Lord
Living off of Quirrell's body and the blood of unicorns
Trying to get the Sorcerer's Stone and get back a body of his own
Quirrell's death only slowed down Voldemort

Me and Lockhart had to teach the students
Defense Against the Dark Arts
Once the Chamber of Secrets was opened
Finding petrified children, caused by a Basilisk

Harry found the diary of Tom Riddle
Who was Voldemort, back when he was little
Helped him find the Chamber right in the middle of the school
Entered like a fool, but he slayed the Basilisk
And I guess that's kinda cool

A while later Sirius Black
A prisoner of Azkaban escaped across the land, he's a bad man
Dementors from the prison circling the school
Looking for this fool this isn't cool, we must be careful

A few changes were made to the staff
Hagrid is a teacher now and Dumbledore got a new hat
Also, Professor Lupin using Boggarts in his studies
Which is quite Riddikulus, if you think about that

Lupin's missing classes, wondering where his ass is
Just so happens to be when Sirius Black is soon to attack and
Even though I'd prefer to walk out the door
Turn to page 394

[Chorus]
Professor Severus Snape, with his long black cape
Head of Slytherin, house of the snake
And Half-blood Prince, Professor of Defence
Potions Master at Hogwarts
He's not a pleasant man, and he seems like he's bad
Picking on Harry Potter in front of the class
And, though they debate, he would do what it takes
To protect this place, he's Severus Snape

[Verse 3]
Harry found a magic map that showed Peter Pettigrew
Pettigrew died years ago or so we know
Followed Lupin into a tree and it appeared to me
That he had been helping Sirius Black lately

Through some discussion, we realize Black was framed
It was Ron's rat, Scabbers, who followed
He Who Shall Not Be Named
Pettigrew was an Animagus and hiding for 12 years
But then Lupin saw the moon, into a werewolf he changed

Pettigrew got away and after many days
The Ti-Wizard tournament started
And students placed their names
Into the Goblet of Fire and then started the race
Underwater, facing dragons, then into a giant maze

I noticed someone was stealing from my potion store
To make Polyjuice potion in order to transform
Didn't know who it was and I had no more
But back to the tournament Harry is leading the score

He heads into the maze with Cedric Diggory
And then he sees the cup, it's a Portkey
Takes them to a place with Pettigrew, he killed Diggory
Traps Harry, had a ceremony, and he brought back the Dark Lord

Harry got away barely with the Portkey
Brought him back to the game and we all see
Harry is taken aside by Mad-Eye Moody
He tried to kill him and when we realized he started changing

Barry Crouch Jr was the one stealing from me
And he assumed the identity of Moody
After time went by we began training
To prevent Voldemort from controlling Harry

While he's protected by the Order Of The Phoenix
Dumbledore has a plan for me to be a double agent
Wants me to kill him to gain Voldemort's trust
Protect Harry from within, so I'll do what I must

Entangled with the Death Eaters, Bellatrix Lestrange
And Lucius Malfoy planning on having Draco do the same
When the time came in the tower everybody saw
The unforgivable curse Avada Kadavra

[Bridge]
And through Dumbledore's secret plan
I've lost all of my good friends
Surrounded by evil people capable of so much death
Giving Harry time to destroy Horcruxes
While the Dark Lord weakens
War breaks out and they defend from enemy forces

Voldemort believes that the Elder Wand serves me
I'm attacked by his snake, Nagini
I am dying, Harry finds me and I let him see
He saw the plan and the day
His parents were taken away
His mother, Lily, and that I loved her
Always

[Chorus]
Professor Severus Snape, with his long black cape
Head of Slytherin, house of the snake
And Half-blood Prince, Professor of Defence
Potions Master at Hogwarts
He's not a pleasant man, and he seems like he's bad
Picking on Harry Potter in front of the class
And, though they debate, he would do what it takes
To protect this place, he's Severus Snape