MusicPulse reads 40-120 Hz and lights only on jumps of the bass, so held notes and bass lines stay dark. Settings gets "Pumpkin light follows the music" (Halloween only, off by default); off, the audio analyser never starts. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01LhzAVaUyqcw5PkGjz4mWW6