AMTA	The American Music Therapy Association
BP	Blood Pressure
CAM-ICU	Confusion Assessment Method in Intensive Care Unit
CAM-ICU-7	Confusion Assessment Method in Intensive Care Unit 7
CG	Control Group
CPOT	Critical Care Pain Observation Tool
DBP	Diastolic Blood Pressure
FAS	Facial Anxiety Scale
GCS	Glasgow Coma Scale
HADS	Hospital Anxiety and Depression Scale
HR	Heart Rate
HT	Head Trauma
ICU	Intensive Care Unit
LOC	Level of Consciousness
MAR	Music-Assisted Relaxation
MT	Music Therapy
NIV	Non-invasive ventilation
NRS	Numeric Rating Scale
PDM	Patient-Directed Music
PDMI	Patient-Directed Music Intervention
PDMT	Patient-Direct Music Therapy
PHQ-9	Patient Health Questionnaire-9
PTSD	The Post-Traumatic Stress Disorder
RASS	Richmond Agitation-Sedation Scale
SBP	Systolic Blood Pressure
VAS	Visual Analogue Scale