{"status": "success", "features": {"bpm": 127.02, "bpm_confidence": 1.0, "key": "F# minor", "key_confidence": 0.7056, "duration_s": 75.99, "loudness_lufs": -7.27, "peak_dbfs": 0.48, "dynamic_range_db": 7.68, "stereo_width_pct": 2.42, "spectrum": {"sub_pct": 66.45, "bass_pct": 30.52, "low_mid_pct": 2.62, "mid_pct": 0.3, "high_mid_pct": 0.06, "air_pct": 0.04, "centroid_hz": 87.6, "rolloff_hz": 82.5}, "rhythm": {"onset_density": 5.32, "beat_regularity": 0.0177, "zero_crossing_rate": 0.018094}, "sections": [{"label": "intro", "start_s": 0.0, "end_s": 8.52}, {"label": "bridge", "start_s": 8.52, "end_s": 9.47}, {"label": "verse", "start_s": 9.47, "end_s": 11.35}, {"label": "bridge", "start_s": 11.35, "end_s": 12.77}, {"label": "verse", "start_s": 12.77, "end_s": 15.14}, {"label": "bridge", "start_s": 15.14, "end_s": 17.03}, {"label": "chorus", "start_s": 17.03, "end_s": 18.92}, {"label": "bridge", "start_s": 18.92, "end_s": 20.81}, {"label": "chorus", "start_s": 20.81, "end_s": 23.17}, {"label": "bridge", "start_s": 23.17, "end_s": 31.44}, {"label": "chorus", "start_s": 31.44, "end_s": 32.38}, {"label": "chorus", "start_s": 32.38, "end_s": 33.8}, {"label": "chorus", "start_s": 33.8, "end_s": 36.17}, {"label": "verse", "start_s": 36.17, "end_s": 39.94}, {"label": "chorus", "start_s": 39.94, "end_s": 41.35}, {"label": "chorus", "start_s": 41.35, "end_s": 43.72}, {"label": "chorus", "start_s": 43.72, "end_s": 45.14}, {"label": "chorus", "start_s": 45.14, "end_s": 45.73}, {"label": "bridge", "start_s": 45.73, "end_s": 53.88}, {"label": "verse", "start_s": 53.88, "end_s": 59.07}, {"label": "verse", "start_s": 59.07, "end_s": 62.38}, {"label": "bridge", "start_s": 62.38, "end_s": 67.58}, {"label": "outro", "start_s": 67.58, "end_s": 75.99}], "chromagram": {"C": 0.4079, "C#": 0.5121, "D": 0.4611, "D#": 0.5971, "E": 0.5041, "F": 0.5409, "F#": 0.5905, "G": 0.5082, "G#": 0.6174, "A": 0.5986, "A#": 0.464, "B": 0.3835}, "mfcc_mean": [-194.3406, 129.0462, 24.4954, 38.3948, 5.2269, 25.0066, 6.2677, 13.6545, 4.7284, 13.8388, -5.547, 13.0026, -4.2816]}, "elapsed_s": 17.2}