Comics and dramas get a BGM sheet: play the score from the card, and swap it on its own
The score never had a place of its own. A track generated while rendering the cut was just another audio file on the work — nothing on the page would play it, and nothing recorded what style it was made to. So the next episode got a freshly generated track, nobody could say why it sounded different, and when the music felt off all you could do was half-hear it under the narration and describe it back. Reference sheets now include a "BGM sheet", sitting next to the voice sheets: the card describes what this work's score is like (genre, instruments, whether it stays under the dialogue), and the track attached to it is the one actually used in the cut — open the card and play it. What the card holds is one short loop that joins back to itself (fifteen to twenty-odd seconds), not a whole song: episodes differ in length, so rendering just tiles it to fit. Storing a full song instead means a short episode never reaches its second half, and a long one restarts the intro in the middle of a scene. If it is not right, swap in another track on the same card; not a single panel or line of voice-over has to change. Sticker packs are still images, so they do not have this.