Music recorded in 432 hertz (cycles per second) is taking off on social media platforms and music streaming services, where users can find an increasing number of tracks and playlists employing the alternate tuning, everything from meditation soundscapes to reggae songs recorded by Ziggy Marley.
Allison Hill, CEO of the American Booksellers Association, is used to strangers expressing sympathy when they learn what she does for a living.
"It's all so funny," she says. "When I tell them I run the trade association for independent stores, they'll say, 'It's just so sad that they're disappearing.'
Moving to music is one of the best ways to stay healthy. Medical professionals say it doesn't matter if it's Western line dancing, ballroom steps, salsa, tap, Zumba at the gym, or with a group