Background/Aims: Endoscopy and colonoscopy are frequently performed procedures to evaluate the gastrointestinal system. These procedures are sometimes disturbing and painful for the patient. In gastrointestinal suits, endoscopy and colonoscopy may be performed on awake or sedated patients. Music therapy is a common and non-pharmacological treatment for various medical conditions, pain, and anxiety. The aim of the present study was to add music therapy to sedation administered during endoscopy and colonoscopy. The effect of music treatment on drug consumption, anxiety, and pain was investigated.