Music songwriting guide for ACE-Step. Provides professional knowledge on writing captions, lyrics, choosing BPM/key/duration, and structuring songs. Use this skill when users want to create, write, or plan a song before generating it with ACE-Step.

ACE-Step的音乐创作指南，提供关于撰写歌词、选择节奏速度、调式和时长以及歌曲结构的专业知识。当用户希望在使用ACE-Step生成歌曲前进行创作、写作或规划时，请使用此技能。