If you know modern a cappella, you know Ben Bram. The Grammy Award-winning arranger and producer has had a hand in almost every major recent a cappella project, from the “The Sing-Off,” “Pitch Perfect ...

Let’s settle this for all time: is it a cappella or acappella? The music, which is performed by one or more vocalists without accompanying instruments, is—drumroll—a cappella. Two words! Likely the ...