A [length, e.g. 45-second] [genre] instrumental for a [type of video]. [BPM] BPM, key of [key]. Intro (0-8 s): [instruments, mood]. Build (8-30 s): [what's added]. Peak (30-40 s): [full arrangement]. Outro (40-45 s): [how it ends, e.g. clean ending on a held chord]. No vocals.