The Martian Circe

Who was this sweet-voiced singer weaving a spell of dreams and drugs that drove men mad and threatened to smash the System? SBI Captain Roal Hartford dared the death of the Thousand Minds to learn her dreadful secret!
That's what they called her, Alayna, Queen of the Silver Stars, and she was singing when Roal Hartford stepped into the Starhouse.
The setting was the same—the swirling blue smoke from scores of zhema cigarettes, the odor of stale alcohol and penetrating Valcoso. The setting was the same as in a thousand other taverns hovering in the backwash of man's advancing conquest of the planets. Only Alayna made this Martian tavern any different from the rest.
The silence while she sang was tribute. The brawling and the laughter and the loud curses stopped for no other tavern singer but Alayna.
As Roal Hartford stood motionless in the doorway, listening, he knew why they called her the Queen of the Silver Stars. She was a queen to these men. Those who listened were men who had no home, and she sang of home to them. She sang of green fields and blue skies and of lovers and of children. Her voice was so low and deep that it was like a husky sob in her throat and they had to strain to hear.
Roal glanced at a table where bearded, drunken space miners listened to the dream of which she sang. One of them with a livid burn scar across his face turned away from his companions and ran a finger over his eye.
For an instant Roal himself was lost in that dream. He thought of far Earth, which he had not seen for so long. The conquest of space seemed suddenly futile. It was nothing but a vain waste of lives and energy and brought no one happiness. Yet why should a man live except for happiness? Someone like Alayna could be happiness for him, he thought. The Queen of the Silver Stars could be happiness.
He dragged his mind abruptly out of the dream world of Alayna's song. He was Captain Roal Hartford of the Solar Bureau of Investigation. His world was the world of dope peddlers, thieves, and murderers that infested the starways. He was a little cog in a great machine and he knew that he had to keep going to keep the machine from breaking down. It wouldn't do for him to wonder why the machine should be kept running at all.