This week, heading the bill in Auckland Philharmonia Orchestra's annual Celebrate Christmas, she's fielding her own family memories. She remembers how the favoured holiday music back then would always be the gypsy jazz of Django Reinhardt and Stephane Grappelli.
"Now, as a mother, in England, I find myself playing carols constantly throughout December; my children even go to sleep to them. In fact, they now want them all year round, but you have to draw the line somewhere."
Pierard will certainly be thinking of Christmases past when she sings John Tavener's The Song of the Angel this weekend.
"I requested it especially," she says. "This is the 'sound world' that I grew up with and my father used to play his recording of Tavener's The Protecting Veil, with cellist Steven Isserlis," she says. "I love its simplicity. Not only is it so moving but it does actually sound like the voice of an angel."
She looks forward to the challenge of Handel's celebrated aria, Let the Bright Seraphim and has no fear of its demands.
"Some might find it terrifying, but I absolutely relish it," she says. "I never get anxious with fast coloratura music, whereas singing a role like Mimi has me thinking technically all the time."
Pierard's big Handel moment may invoke memories of the same aria sung by Dame Kiri Te Kanawa at the 1981 wedding of Prince Charles and Lady Diana Spencer. The soprano remembers it well and is a firm fan of Dame Kiri.
"I adore her," she says. "She's not only a wonderful teacher, having had so much coaching and experience herself, but she genuinely cares about younger singers, especially with work visas.
"I had no idea of her god-like status in Britain until I went there and I'm sure that most New Zealanders don't appreciate just how iconic she is."
LOWDOWN
What: Auckland Philharmonia Orchestra, Celebrate Christmas
Where & when: Holy Trinity Cathedral, Friday and Saturday