One of the 4 music genres (Turkish Folk, Classical, Turkish Art and Sufi Music), which was determined by the researcher by scanning the literature 30 minutes before the CAG procedure, and the expert opinion was taken to the participants in this group was played with a 5-minute headset. The musical genres were arranged in instrumental, nonverbal, 70 decibels in terms of rhythm and duration and played according to the individual's choice.

Participants in this group were trained to inform them about CAG in visual, audio and written form. Information training was provided by the researcher 30 minutes before the CAG procedure after the outpatient clinic controls of the patient. Information education prepared by the researcher by scanning the literature and getting expert opinion; It includes 7 minutes of video explanation about the CAG process, discussion after video watching, question and answer, and the delivery of a training book prepared in written form.

Individuals in this group received routine nursing care and no intervention was made by the researcher. In routine nursing care for individuals who will receive CAG procedure in the clinic; Preparation for the CAG procedure, which involves opening the vascular access and dressing the surgical gown, is included in the pre-and post-procedure routine once and more frequently when there are deviations from normal, and if the patient asks questions about the procedure, measurement of blood pressure, heart rate and oxygen saturation.

The music selected by the participants was played to the music listening group.

Spielberg State- Trait Anxiety Scale. The total score between 0-19 obtained from the state anxiety scale shows that there is no anxiety, the total score between 20-39 indicates mild, the average score between 40-59 indicates moderate, and the total score between 60-79 indicates severe anxiety, and over 60 points are needed for professional help. The scores obtained from the trait anxiety scale vary between 20 and 80. A high score means a high and a low level means anxiety.

visual analog scale. It consists of a straight line with endpoints that define end limits such as "no pain" and "pain as bad as possible". The patient is asked to mark the level of pain on the line between the two endpoints.

In the study, a digital sphygmomanometer, which has been calibrated in comparison with the mercury sphygmomanometer, is used in order to prevent individual differences in the measurement of blood pressure. For accurate results, the sphygmomanometer sleeve is sized for adult individuals (width = about 20 cm, length = about 40 cm). In order for the blood pressure not to be affected by the conditions during the measurement, it is taken into account that the individual did not drink tea or coffee, take caffeine, and preferably did not eat during the 30 minutes prior to measurement.