Jam calls a group of performers to improvise. The room is furnished with items, clothing, microphones. The performers find the action in a story where unexpected creativity and body reign the scene. The public is invited to follow those acts and those places that are determined as they consume, free to stand, go,or enter the jam. Improvisation, long used as a technique of creative research, sval the sensitivity of the work of the performer who, without playing the default, causes the making of the environment through active listening.