A score can give a performer a decision rather than one compulsory route. Try making a tiny piece whose identity survives two different paths through it.
Draw a starting box containing one quiet sound, then two branches. One branch might ask for three short taps; the other for a gentle rub on the same surface. Bring both branches to a shared ending, such as one final tap followed by stillness.
Tell the performer when to choose and what remains fixed. Can they decide beforehand, or must they choose while playing? May they repeat a branch? Without those details, a diagram can produce confusion rather than useful freedom.
Hear two versions before revising
Ask someone to perform each route, using only sounds they can make comfortably. Notice which feature makes the versions feel related: the opening, the sound material or the shared ending.
Then allow the performer to select a route without announcing it. Listen for the moment you recognise their decision. If the choice changes nothing audible, decide whether that matters for the piece you wanted to make.
Write one sentence below the drawing explaining the purpose of the choice. It might create surprise, invite a response or give the performer room to adapt. Keeping that purpose visible helps you revise the score without adding rules merely to make it look more complicated.
Editorial illustration from this site’s image library; not documentary evidence of the example or object discussed.