Before they were Tegan and Sara, they were Sara and Tegan, and before they were Sara and Tegan, they were Plunk. Their band name "Plunk" was short for "light punk" and they recorded two demo tapes under Plunk that were titled "Who's In Your Band?" and "Play Day," neither of which have been fully released to the public. Some track lists and artwork for these demo tapes have been released and can be seen in the pictures below.

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Three of these Plunk demos were released on the internet (seemingly some time before 2004). These three songs were 

Plunk, Emaculation, and They're Waiting For You. It is unknown if these songs were released by Tegan and Sara themselves or if someone else who had a demo tape released it.

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The audiobook for their memoir High School included these songs:

• Tegan Didn't Go to School Today

• I'm Alive

• Please Help Me

• Plunk

• I Don't Owe You Anything

• Instamatic

• Johnny My Frend

• Emaculation

• Don't Believe the Things They Tell You, They Lie.

• Collide

• Keep Them Close 'Cause They Will Fuck You Too

• Kissing Spiders

• Zebra Sun

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These songs have not been released:

• Spintistic

• Christ Comes Quickly

• Slow and Nicer

• Smurf Revolution

• Delayed & Marshmellowey

• Sadly and Loaded

• Fort Nothing

• I'm The President

• Stowed

• Click and Suck

• Condamination

• Liars Club

• Plastic

• Rockstar

• Everyone Is Equal

• Nod and Smile

• Followed

• Gregory

• Valium