The picture is based on Chapter 32: The Rose, which ends with a cover of the song with the same name done by The Beach Bears.
After having seen the picture drawn, I went to bed singing the song. After a short time in bed, though, I began singing my own words to it. I eventually fell asleep in the middle of doing this.
Today, I sat down and finished writing out the lyrics. The only problem I had when I finished was that, although I'm perfectly capable of singing, I can not sing multiple harmonies on my own very well...
So after I finished writing it, I handed it it Dipper, whom I knew could do the song the justice it deserved. He loved the lyrics I wrote, and agreed to record it for me.
So, here is the final product.
Rewritten lyrics done by myself
All singing parts done by \r\n\t\t\t\t\t
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Some say friendship is a mystery
That hides the truth you need
Some say friendship is a memory
Emotion that you've freed
Some say friendship is a victory
And they're sure they will succeed
I say friendship is a journey
It goes on, and I proceed
It's the hope that we hold on to
That things will be all right
It's the times that we have been through
In the darkness and the light
It's the days we spend together
And I think that you'll agree\t\t
I hope this friendship lasts forever
You mean the world to me
When the night has been too lonely
And the days have been too long
And you think this friendship's only
Meant to last if you are strong
Just remember as you wonder
And the sun begins to show
There's a friend who will be waiting
As our friendship ever grows