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.
Put a little of you into my heart
Oh oh oh
Took a chance and you tore it apart
Oh oh oh
I let a little light into the dark
Oh oh oh
Caused a backup inside of my heart
Oh oh oh
See your face makes it's hard to move on
Hear your voice can't manage alone
Tell me what you're doing now? Where you live?
Tell me are you in love? How you've been?
I'm dying to know
Is the one you ended up with everything you wanted?
I, I'm dying to know, I'm dying to know
Is the one you ended up with everything you wanted?
You've been on my mind again
I've been crying to all my friends
You hurt me bad, I want to understand
Give me back 'cause you owe me that
I keep telling this to my friends
Can't let go, it's in my head
You hurt me bad, I want to understand
Give me back 'cause you owe me that
I'm dying to know
Is the one you ended up with everything you wanted?
I, I'm dying to know, I'm dying to know
Did you ever even give me a thought?
Oh oh oh
Do you ever think about me at all?
Oh oh oh
There's a water over you in my mind
Oh oh oh
Should've never let you into my life
Oh oh oh
See your face makes it's hard to move on
Hear your voice can't manage alone
Tell me what you're doing now? Where you live?
Tell me are you in love? How you've been?
I'm dying to know
Is the one you ended up with everything you wanted?
I, I'm dying to know, I'm dying to know
Is the one you ended up with everything you wanted?
You've been on my mind again
I've been crying to all my friends
You hurt me bad, I want to understand
Give me back 'cause you owe me that
I keep telling this to my friends
Can't let go, it's in my head
You hurt me bad, I want to understand
Give me back 'cause you owe me that
I'm dying to know
Is the one you ended up with everything you wanted?
I, I'm dying to know, I'm dying to know
Why'd you let me go? I'm thinking I was the only one
You knew I loved you more than I loved anyone
You know you left me nothing but a world of hurt
It kills me still no matter what you might've heard
You've been on my mind again
I've been crying to all my friends
You hurt me bad, I want to understand
Give me back 'cause you owe me that
I keep telling this to my friends
Can't let go, it's in my head
You hurt me bad, I want to understand
Give me back 'cause you owe me that
I'm dying to know
Is the one you ended up with everything you wanted?
I, I'm dying to know, I'm dying to know
Is the one you ended up with everything you wanted?
I'm dying to know
Is the one you ended up with everything you wanted?
I'm dying to know, I'm dying to know