Folding electronic piano comprising keyboard-stiffening means

Foldable and portable electronic piano, comprising

• several modules, each comprising a set of keys that can reproduce the music notes of an actual piano through its associated electronics, wherein said modules are linked together through a supple membrane capable of withstanding material working and which permits the electronic piano to be folded and unfolded, the modules once folded having the volume of a book and constituting the keyboard of an actual piano when they are deployed;
• and
• stiffening means which can take two positions after the modules have been deployed to make a keyboard, a first position allowing the keyboard to be folded and a second position imparting stiffness to said keyboard.