"We just thought, oh my gosh, she's got something special."
Mrs Lopa said Jerome took an interest in learning music at age five, when he would play around on his father's "kind of broken" ukeleles. He is also a talented singer with influences from Ed Sheeran, Stan Walker, and Stevie Wonder.
"We would be driving in the car and he would be identifying notes and chords on the radio," Mrs Lopa said.
"He'd be like, that's a C, that's a D, then he'd get home and he'd play the song. "
The two siblings will be performing contemporary and Tokelauan music at Wellington's Pasifika Festival on January 25 after being scouted out at a performance in Porirua earlier this year.
"This is probably one of their biggest milestones," Mrs Lopa said.
"There will be representatives from all of the islands and this will be them representing their dad which is huge for us."
Mr and Mrs Lopa said they were grateful to Connecting Communities Wairarapa for providing a platform for their children and other children to share their talents.