 After completing his studies, Poot worked firstly as a music teacher, reviewer, and freelance composer.In 1925, he and several other former students of Gilson's formed a group of musicians called Les Synthétistes, who styled themselves as a Belgian equivalent of The Mighty Five in Russia and Les Six in France.Through the group, they hoped to combine their strength and inject dynamism into an otherwise conservative Belgian musical scene, through the composition of solid contemporary pieces.