Jantine Annika Heij (born September 21, 1990) is a songwriter, vocalist, keyboardist and producer from the Netherlands.

She graduated with honours from Codarts University of the Arts in 2012.

She has worked with Skrillex, Hardwell, Exo, NCT 127, Monsta X, Rock Mafia and released songs on Spinnin' Records, Universal Music Group, SM Entertainment and more.

[1] Jantine received a platinum award and a 2017 Buma Award for co-writing All Night Long, performed by Dutch artist Rochelle.

1 position with NCT 127's second mini album Limitless,[4] which debuted at a no.1 position in the South-Korean Gaon Album Chart.