{"status": "success", "features": {"bpm": 136.64, "bpm_confidence": 1.0, "key": "A# major", "key_confidence": 0.8616, "duration_s": 30.0, "loudness_lufs": -7.87, "peak_dbfs": 0.73, "dynamic_range_db": 11.21, "stereo_width_pct": 15.96, "spectrum": {"sub_pct": 2.57, "bass_pct": 43.08, "low_mid_pct": 31.27, "mid_pct": 21.67, "high_mid_pct": 0.98, "air_pct": 0.43, "centroid_hz": 696.7, "rolloff_hz": 1254.8}, "rhythm": {"onset_density": 3.57, "beat_regularity": 0.0168, "zero_crossing_rate": 0.052139}, "sections": [{"label": "intro", "start_s": 0.0, "end_s": 0.95}, {"label": "bridge", "start_s": 0.95, "end_s": 1.83}, {"label": "bridge", "start_s": 1.83, "end_s": 6.18}, {"label": "verse", "start_s": 6.18, "end_s": 7.47}, {"label": "verse", "start_s": 7.47, "end_s": 8.79}, {"label": "verse", "start_s": 8.79, "end_s": 10.08}, {"label": "bridge", "start_s": 10.08, "end_s": 10.96}, {"label": "verse", "start_s": 10.96, "end_s": 13.13}, {"label": "bridge", "start_s": 13.13, "end_s": 14.0}, {"label": "chorus", "start_s": 14.0, "end_s": 16.18}, {"label": "bridge", "start_s": 16.18, "end_s": 16.61}, {"label": "chorus", "start_s": 16.61, "end_s": 17.93}, {"label": "bridge", "start_s": 17.93, "end_s": 22.28}, {"label": "bridge", "start_s": 22.28, "end_s": 23.14}, {"label": "bridge", "start_s": 23.14, "end_s": 26.18}, {"label": "verse", "start_s": 26.18, "end_s": 28.35}, {"label": "bridge", "start_s": 28.35, "end_s": 28.78}, {"label": "verse", "start_s": 28.78, "end_s": 30.0}], "chromagram": {"C": 0.4672, "C#": 0.3223, "D": 0.4407, "D#": 0.3094, "E": 0.3403, "F": 0.428, "F#": 0.2907, "G": 0.4807, "G#": 0.3111, "A": 0.4975, "A#": 0.5909, "B": 0.2512}, "mfcc_mean": [-96.5472, 151.8101, -30.6751, 41.3614, -20.9648, 32.1752, -10.2695, 18.418, 0.9071, 3.1444, 2.2256, 0.0471, 0.9562]}, "elapsed_s": 10.07}