Operation Ouch! - Series 8: 4. Loud, LOUD, LOUDER! - Signed

Name: Operation Ouch! - Series 8: 4. Loud, LOUD, LOUDER! - Signed
Description: Dr Xand has created a thunder tube to show you how your vocal tract makes your voice loud, and find out who is today’s Top Doc in our Ouchology quiz.

Dr Xand has created a thunder tube to show you how your vocal tract makes your voice loud, and find out who is today’s Top Doc in our Ouchology quiz.