The title is probably from Mozart's The Magic Flute...
Lyrics
The queen in her garden
When all are asleep
Gathering violets
Tending her sheep
Queen of the night
Walking in moonlight
Bury a potion
Under the moon
Magic will bring
Her love to her soon
And each of her tears
That falls to the ground
Grows into violets
When none's around
Circle of stones
Lady in blue
Lighting a candle
How I love you
Asleep in the shadows
On Candlemas Eve
Dreaming of moonbeams
And spells she can weave
I will work for my gain
Learn from my pain
Speak to the earth
Know my self worth
[the refrain is from The Enchanted Tarot, by permission]