Using just a pitch pipe and their voices, Ken Paulhamus and his three sons formed the barbershop quartet Achording to Dad more than 20 years ago.

The group has changed a little since then ­— one of the brothers has been replaced with a cousin — but the traditional barbershop quartet sound remains the same.

Check out our interview with Paulhamus and his family — along with some of their music — in this week's Keeping the Beat podcast at dailyitem.com.

The podcast is also available on Apple Podcast and Google Play Music apps and platforms. To listen or subscribe, search for "Keeping the Beat."