Kiwi actress Rose McIver has wiped clean her zombie make-up to star in a new music video by the Kiwi siblings behind Broods, and which was co-written by Devonport's own Lorde.

Broods - made up of Georgia Nott on lead vocals alongside her multi-instrumentalist older brother Caleb - tweeted the release of the video for their song Heartlines today.

"We spent a day in the California desert heat to shoot the video for 'Heartlines'," they tweeted.

McIver, who starred in Peter Jackson's The Lovely Bones and is now a regular on United States' TV series iZombie.

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She also took to Twitter to let people know about the song, which is from Broods Conscious album and depicts a recently broken up couple with unfinished business.

in an interview with Billboard, the Los Angeles-based Nott siblings spoke about how they partnered with Microsoft to use the tech company's Microsoft Band device to track Georgia's emotions and heart rate and translate the data into geometric shapes and visuals throughout the video, and on the upcoming North American tour leg of their Conscious tour.

Caleb Nott said the method gave a visual sense to what they were feeling.

"Your performance can give so much emotion."

The 24-year-old hinted to Billboard the song was personal, and spoke about a long-distance relationship between two people who want to be together but are never in the same place.

The magazine also reported the siblings' collaboration with megastar Lorde, whom they refer to in conversation by her birth name of Ella Yelich-O'Connor, was partly because of their shared relationship with producer Joel Little and a reflection of New Zealand's small size.

The siblings also said they hope to see the video's technology push their sound even further, one day using the bio-interactive technologies to translate their intimate data, such as heart rate and temperature, into music itself.