《A LETTER》是动漫《高达UC》中的插曲，由泽野弘之创作。其旋律充满伤感希望而空灵深受动漫爱好者的喜爱。

All my friends have gone away
I need myself to sing this song
But you always passed away
But It seems to be okay
All my wish and powers
They would take me to the gate
Should I really find my problem ?
Do I really want to know about ?
I'm writing a letter for me
Is there anything I would say ?

I don't have to throw my life away
Everything goes wrong to turn into the way of life
This could take so long to find the way
All those people cry in vain
Now I see the light in pain
I can find the way of love...

You don't have to throw your life away
Everything goes wrong to turn into the way of life
This could take so long to find the way
All those people cry in vain
Now you see the light in pain

Say goodbye to the perfect sky
But it's your love can be the real life line