An example of the mental aspect is when music therapy is added to substance abuse programs. Many substances were explored such as LSD, alcohol, cocaine, heroin, etc. a variety of benefits for patients were experienced. These include improved internal locus of control and a higher mood associated with the improvement of internal locus of control. The majority of participants said they “felt” the music during a music therapy session and preferred slow ballads and love songs (music presentation during LSD therapy). During sessions, music helped find alternatives to the use of substances that and enabled contact with inner feelings (In and Outpatient rehabilitation unit). High percentages of decreased anxiety, depression, anger, and sadness were presented (Inpatient dual diagnostic treatment unit). As well as improved psychiatry, spirituality, and physical and functional well-being (Outpatient setting Native Americans 'Alcohol’). Patients reported music therapy to be very helpful and resulted in an increase in seeking spiritual support, positive imagery, and self-reliance (Outpatient recovery Canada) (Adolescent outpatient psychological treatment, inherent abuse, a case study ‘USA’). Other improvements in a group setting include increased discussion on important issues, nostalgia stimulated by music and close interaction with other group members (such as learning about each other or problem solving). Music “guided” the patient’s experience through therapy sessions (found in rehabilitation programs for the substance LSD), and the new element encouraged consistent attendance among group members. In general, Patients show a large amount of readiness to recover, a decrease in depression, an increase in sobriety, improved Locus of Control, improved client cooperation, increased drug avoidance, and self-efficiency. Patients also have an increase in problem recognition and motivation.