Possible Clues:

• Emitting sharp, piercing cries
• Yelling
• Shrieking
• Crying out in a high-pitched voice
• Uttering sharp piercing cries
• There's a lot of it that's high, by the sound of it
• Celebrate, going over the top yelling
• Very conspicuous
• A lot is done on roller coasters
• Highly obvious to vocalise about pick of the bunch