The fourth episode of the science competition sees the young entrants build a piano for Luxembourgish electro-pop artist CHAiLD.

This week, the young contestants will use simple materials to construct a piano for Luxembourg Song Contest finalist CHAiLD, as well as using the side of a guitar to determine the weight of a suitcase. As it stands, only Team Red is complete, while Team Purple and Yellow will be hoping not to lose any more members. The Science Challenge Show is entering a new and exciting round.

Watch all the episodes right here on RTL Play. New episodes premiere every Sunday night at 7.30pm.