Nurse Rod Salaysay works with all kinds of instruments in the hospital: a thermometer, a stethoscope and sometimes his guitar and ukulele.

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In the recovery unit of UC San Diego Health, Salaysay helps patients manage pain after surgery. Along with medications, he offers tunes on request and sometimes sings. His repertoire ranges from folk songs in English and Spanish to Minuet in G Major and movie favorites like "Somewhere Over the Rainbow."

Patients often smile or nod along. Salaysay even sees changes in their vital signs, like lower heart rate and blood pressure, and some may request fewer painkillers.

"There's often a cycle of worry, pa

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