Draft the plan for a music track before any of it is made, and before anything is charged. Describe the track you want for your edit and this returns the structure the music maker intends to build: the overall styles to keep in, the styles to keep out, and a list of sections with a name, a length and its own styles and lines. Edit whatever you like in that plan, then pass the whole thing to generate_music as plan to hear it. Use this for longer or structured pieces (intro, verse, chorus, drop, outro) where a single sentence will not get the shape right. Free: this call does not make audio and does not cost tokens.