Challenge of the week - In loving memory

Thanks for all you've done
I've missed you for so long
I can't believe you're gone
You still live in me
I feel you in the wind
You guide me constantly

I've never knew what it was to be alone, no
Cause you were always there for me
You were always there waiting
And I'll come home and I miss your face so
Smiling down on me
I close my eyes to see

And I know, you're a part of me
And it's your song that sets me free
I sing it while I feel I can't hold on
I sing tonight cause it comforts me

I carry the things that remind me of you
In loving memory of
The one that was so true
You were as kind as you could be
And even though you're gone
You still mean the world to me

I've never knew what it was to be alone, no
Cause you were always there for me
You were always there waiting
But now I come home and it's not the same, no
It feels empty and alone
I can't believe you're gone

And I know, you're a part of me
And it's your song that sets me free
I sing it while I feel I can't hold on
I sing tonight cause it comforts me

I'm glad he set you free from sorrow
I'll still love you more tomorrow
And you will be here with me still

And what you did you did with feeling
And You always found the meaning
And you always will
And you always will
And you always will

Ooo's

And I know, you're a part of me
And it's your song that sets me free
I sing it while I feel I can't hold on
I sing tonight cause it comforts me

My students... a challenge... what does this song mean? What is its purpose? Can you tell me? Write a short comment answering me these questions ...