slå an tonen

see:Se: tonea note (musical) · a tone (of voice or of writing) · a tune · a tinge, a hue

spille første tone i et musikkstykke to play the first note of a piece of music Eng. phraseto strike the opening note
vise hvordan noe skal gå;
gi rammene for noe to show how something is going to go;
to set the framework for something Eng. phraseto set the tone
- ledelsen slo raskt an tonen for møtet the management quickly set the tone for the meeting
- den første låten slår an tonen for hele konserten the first song sets the tone for the whole concert