And @thehomme ,
Be aware that the first Map Range Node is not Clamped. The output of the Musgrave Texture with the given parameters, lies partially outside of the [-1, 1] range:

That means that the output of the first Map range Node lies partially outside of the [0, 1] range:

Clamping a Map Range Node, means that the output is clamped within the [To Min, To Max] Range.