Aww this song made me so teary the minute I heard it!! I l loved doing it and I'm sorry if my voices were off.

Instrumental by RainShadow
https://www.youtube.com/watch?v=ElD5R8IFEKw

Lyrics:

We were searching for our cutie marks for a while there
Trying to find out how we fit in
So many ways we tried before, but we kept on trying more
Cause the Cutie Mark Crusaders don't give in

Now we know what it took all along
And our journey here is never really done
For it is more than just a mark, it's a place for us to start
An adventure that has only just begun

We'll make our mark
Show the world what we can do
We'll make our mark
Helping fillies to break through
To the ultimate reward of a cutie mark

I'm so proud of you little buddy
You've taught me a thing or two
You inspire everypony around you
And you inspire me too

You've made your mark
Done Equestria so proud
You've made your mark
And we're here to sing it loud
For the ultimate reward of a cutie mark

We started out just three
Crusaders journeying to see
What we find in our eharts
Discover our destiny

And here we are best friends
About to start it again
An adventure that never will end

We'll make our mark
Helping fillies most in need
We'll make our mark
So each one of them succeeds
Cause the ultimate reward
Is a cutie mark