“Bring yourself back to your awareness,” said Sara Auster , a self-proclaimed sound healer, after 45 minutes in a ballroom at a hotel in Chicago where she created vibrations using crystal bowls and tuning forks as well as a traditional Indian accordion, known as a shruti box. Seventy-five people got up like a gaggle of toddlers being shaken from a nap.

The session, which cost $30, and was like many popping up in churches, community centers and even some prisons and hospitals . The goal, practitioners say, is to use sound to tackle individual and collective anxiety, depression, insomnia and more.

Recently, musicians like Erykah Badu and the Icelandic band Sigur Ros have also dipped into sound healing.

Over in the tech world, mindfulness is deeply in vogue. Jack Dorsey, the chief executive of Twitter, swears by meditation. Since 2016, Ms. Auster, 40, has been invited as well to perform for various Google company initiatives. This past April, Adrian DiMatteo, a musician in Brooklyn who has a degree in jazz performance, led a sound bath in the neighborhood of Greenpoint for leaders at Instagram. (“They approached us to do a corporate bonding event, as they’re moving towards doing more events without alcohol,” Mr. DiMatteo said . “They had lots of questions about the instruments and the bowls.”)