Note to recorder:
Natural speed, please.
1 I scream, you scream, we all scream for ice cream. The thirty-three thieves thought that they thrilled the throne throughout Thursday. She sells seashells by the seashore of Seychelles. Ice cream, you scream, we all scream for ice cream.
2 I scream that: "The thirty-three thieves thought that they thrilled the throne throughout Thursday. Thirty-three thousand feathers on a thrushes throat. Six sick hicks nick six slick bricks with picks and sticks. You scream, ice cream, we all scream for ice cream."
Tongue twisters! :-)