In ambient writing, the strongest prompt words are rarely note names. They are the words that set movement speed, tone colour and space: how long a sound sustains, how much high frequency it keeps, how far away it seems, and how slowly the harmony changes. A prompt that states “single sustained chord, very wide, no percussion, movement roughly every ten seconds” will produce a more predictable result than one that names a mood alone.
Each preset below gives a full musical specification, a complete prompt you can adapt, and a breakdown of which phrase controls which musical dimension. See prompt anatomy for the underlying structure.