He says having females among the aspiring John Bonhams, Ginger Bakers and Ringo Starrs is no longer rare, however he's never heard of three sisters giving it a bash before.
Jamie, now in her first year at Napier Girls' High School, started it all, after she saw someone drumming at school about three years ago and thought: "That looks like fun."
She has also learned to play the flute, and she and a few schoolmates have been forming a rock band, stalled a bit by the Covid-19 lockdown, and so far without a name.
Holly "liked it too" and thought she'd "try it", impressed by how simple the tutor had made it for her.
Sophia, who, like Holly, is at Napier Central School, thought it was a cool idea too, and the drum kit at home is in her room.
As for drumming heroes and who they might want to be? They hadn't heard of John Bonham, rated by many as the No 1 rock music drummer of all time. But then he hasn't been around the past 40 years, having died in 1980 aged 32.
There's just the slightest hint of familiarity with the name Ringo Starr, but then he's just turned 80.
The hero may be much closer at hand, in Budge, who was brought up on pipe bands and currently plays in recording group Infinity. In 2003 he set a New Zealand drumming endurance record of 24 hours non-stop apart from a 5-minutes' break every hour each, and broke the record with a 49-hours stint in 2007, when he was 44.
"Wow!" reckons Holly. "You did that …?"