Song of the Day: “Don’t Worry Be Happy” by Bobby McFerrin

This week, I’ll be writing about some a cappella songs I like. I’m sorry this week doesn’t have a catchy tagline like “Get Pitch Slapped.” On the one hand, it’s not hard to see how “Don’t Worry Be Happy” became an oddball #1 smash. Its signature “ooh-ooh” vocal riff is really delightful. And any track…