The marimba ‘stream’ is a musical instrument in the idiophone family. It consists of a set of metal tubes, which resonate with a soft sound, rich in harmonic tones. Only one person at a time can play the marimba ‘stream’. The instrument makes a set with other instruments such as a xylophone ‘echo piano’ or handpan ‘duet’. The playing technique is very simple and intuitive. Just strike the middle parts of the tubes in any rhythm with the mallets.