Introduction: Hypertension is one of the risk factor of heart and blood vessels diseases which is categorized as the silent killer. There are two ways to manage the hypertention, namely the pharmacological and non-pharmacological interventions. One of the non-pharmacological intervention is relaxation techniques through Sundanese traditional kecapi suling music therapy. Objective: The purpose of this study is to determine the effect of Sundanese traditional kecapi suling music on blood pressure of the elderly with hypertension in PSTW Pertiwi Bandung. Methods: The research design using pre-experimental with one group pre and post test design. The number of samples were 13 respondents. Sampling technique used was non-probability with purposive sampling technique. Data analysis was done in two stages, univariate and bivariate (t-dependent test). Result: the study had shown that there was differences in systolic (p value 0.0001) and diastolic (p value 0.001) blood pressure before and after intervention. Discussion: It suggested that the result of this research will be used as an input for PSTW Pertiwi Bandung and for nurses to apply this intervention as one of non-pharmacological intervention in managing the high blood pressure among elderly.