Subject area:	Medicine and Dentistry
More specific subject area:	Nursing, cardiology, complementary therapies to reduce anxiety and stress.
Name of your protocol:	Using music to reduce anxiety and stress in patients undergoing coronary angioplasty: a randomized clinical trial protocol.
Reagents/tools:	Not applicable.
Experimental design:	Fifty-two patients will be allocated to two groups: control and experimental. Headphones will be used in both groups; however, only in the experimental group will the individual's preferred music be played for 15 min before coronary angioplasty. The effectiveness of music in reducing anxiety and stress will then be assessed.
Trial registration:	Registrations: RBR-5jy7kzj - Brazilian Registry of Clinical Trials - REBEC (09/05/2024). This study was approved by the Research Ethics Committee of the Federal University of Rio Grande do Norte - UFRN, under CAAE - 74,989,823.6.0000.5537.
Ethics:	Individuals interested in participating in this study will receive a Free and Informed Consent Form, which they will read and sign to confirm their participation and inclusion in the sample.
Value of the Protocol:	•This protocol tests the effectiveness of a low-cost, non-pharmacological strategy for reducing anxiety and stress during an invasive arterial and coronary procedure. •This intervention could be incorporated into the Systematization of Nursing Care, enhancing the nursing team's autonomy and promoting more humanized care. •The therapy will be applied as a complementary treatment and will not replace the standard care recommended by the health service. Therefore, no individual involved in the study will be deprived of the gold-standard care for their clinical condition.