Tegan Rain Quin y Sara Keirsten Quin nacieron el 19 de septiembre de 1980 en Calgary, Alberta, Canadá. Desde muy temprana edad, las gemelas mostraron un interés ferviente por la música. Al crecer en una casa llena de discos y guitarras, no era raro verlas tocando o experimentando con melodías y letras desde que tenían ocho años.
Durante su adolescencia, Tegan y Sara comenzaron a escribir y grabar sus propias canciones. En 1998, con solo 18 años, ganaron una competencia de radio local cuyo premio era tiempo de estudio profesional para grabar un álbum. Este evento marcó el punto de partida de su carrera profesional y poco después, lanzaron su primer álbum "Under Feet Like Ours" de forma independiente en 1999.
En el año 2000, firmaron con el sello Vapor Records, fundado por Neil Young. Este acuerdo cimentó su camino a la fama. Su segundo álbum, "This Business of Art" (2000), fue bien recibido por la crítica y les permitió iniciar giras más extensas en Canadá y Estados Unidos, abriendo para bandas como Neil Young y The Pretenders.
Con el lanzamiento de "If It Was You" en 2002 y "So Jealous" en 2004, la dupla alcanzó una notoriedad aún mayor. "So Jealous" en particular hizo que captaran la atención del público internacional, gracias a canciones como "Walking with a Ghost", que fue versionada por la popular banda The White Stripes.
I want to live like I did back then
With the stars in my eyes
And the blood from the heart of a pen
With my hood pulled up
In the light of the night
I was smoke in the bed
Like a ghost white light
On the turnpike
You didn't lift my world off me
But you said to let it go
So I did, now I see
That my friends are gonna leave me
If they don't believe that they can save me
You don't have to live like that
You don't have to live like that
Like a bolt of lightning
Your stoplight moves on
And you wake up crying
What's going on
What's going on
I'm waking up tired
No god has appeared
I never ever really
Felt real faith in your fear
You don't have to live like that
You don't have to live like that
I'm so sorry for the things I said
For the light of me died
When a part of her did
Like a dream, it's a fear
And it won't carry out
I'm living easy
Nightmare plant a seed
In the garden of doubt
You didn't lift my world off me
But you said to let it go
So I did, now I see
That my friends are gonna leave me
If they don't believe that they can save me
You don't have to live like that
You don't have to live like that
Like a bolt of lightning
Your stoplight moves on
And you wake up crying
What's going on
What's going on
I'm waking up tired
No god has appeared
And I never ever really
Felt real faith in your fear
Just wash it away
Let me wash it away
You never ever really
Felt real faith in your fear
You don't have to live like that
You don't have to live like that
You don't have to live like that
You don't have to live like that