In addition to the routine practice of the clinic, the pediatric patients in this group listened to music through headphones for 20 minutes just before the procedure to reduce the child's anxiety and fear. The therapeutic effect of music was used. Before the study, children between the ages of 6 and 12 who were inpatients at the clinic were asked what music they most liked to listen to, what kind of music they liked, and what their favorite artists and songs were. The music was selected based on the children's answers. In addition, the researcher added children's songs by a musician named Banu Kanıbelli.

Children were verbally informed about the treatment process and invasive procedures from the day they were diagnosed with the disease. The children in this group were verbally informed by the nurse in charge of the clinic about the intrathecal chemotherapy treatment and why it was performed

: In addition to the routine practice of the clinic, the pediatric patients in this group listened to music through headphones for 20 minutes just before the procedure to reduce the child's anxiety and fear. The therapeutic effect of music was used. Before the study, children between the ages of 6 and 12 who were inpatients at the clinic were asked what music they most liked to listen to, what kind of music they liked, and what their favorite artists and songs were. The music was selected based on the children's answers. In addition, the researcher added children's songs by a musician named Banu Kanıbelli

Child Anxiety Meter-State (CAM-S):The scale can be scored between 1 and 10. An increase in the score means an increase in anxiety.

Children's Fear Scale (CFS): The scale can be scored between 0 and 4. An increase in the score means an increase in fear

Face, Legs, Activity, Cry, Consolability pain scale (FLACC): total score between 0 and 10 is obtained by assigning 0, 1, or 2 points for each category. As the severity of pain increases, the total score increases, and as the severity of pain decreases,