"I know what you're thinking," he said in a sing-song voice.
Joey started talking in a sing-song voice, as if he was telling a story to a bunch of little children.
She was talking again in a high, sing-song voice.
She laid them out neatly on the table and spoke to her sister in a sing-song voice.
"I know what you're all thinking," the American said in a sing-song voice, "does he really do his own drawings?"
"I'm waiting for an answer," he said in a sing-song voice.
"We've had this conversation before," she said in a sing-song voice.
The sing-song voice was coming from under the printers' bench.
He could sense the relief in her even over the air and despite the sing-song tonal voice she was using.
Ignoring me, she spoke to the dog in a soft, sing-song voice.