I hadn't really thought about it that way until Jim expressed it, but Spirituality is like a sense. If you wish me to speculate, I might suppose that spirituality allows one to communicate with God. I believe that my Spiritual sense connected with music and opened my channel of communication with God before I had the slightest clue that there was an "other worldly" dimension.
As I began to improvise--and then compose--I found the Spiritual plane easiest by staying away from words. It was easy in my childhood, as I was often singing in Swedish, but otherwise talking in English. When I sang, I said the words, but felt the Spirituality.
Made me think of a song I sang as a four year old (English translation)
Barnatro (childhood faith)
Do you still believe in heart,
Nor from childhood faith depart?
Can you pray as in the days of long ago:
"Lord, who loves the children all,
Keep me, guard me, though I'm small"?
Aged mother will rejoice with heart aglow!
Childhood faith, childhood creed,
A golden bridge to heaven you are indeed!
You perhaps have wandered round
All the earth nor fortune found,
Sought in foreign lands your gladness to increase,
You have wept, for home you long
When you hear a well-known song
That brings memories of home and pleasant peace.
You'll be blessed as before,
If you open your heart's door,
Blessings of your childhood years it will impart.
There'll be joy in heaven, too.
You'll rejoice, to God be true,
You can sing with jubilation in your heart.
Here's a version in Swedish--the background piano is much like my Mother played when I sang.