The Twilight Turns From Amethyst

The twilight turns from amethyst
To deep and deeper blue,
The lamp fills with a pale green glow
The trees of the avenue.
The old piano plays an air,
Sedate and slow and gay;
She bends upon the yellow keys,
Her head inclines this way.
Shy thought and grave wide eyes and hands
That wander as they list,
The twilight turns to darker blue
With lights of amethyst.