Lower chord confidence threshold from 0.35 to 0.20 for better detection

modules/chords.py

@@ -308,11 +308,11 @@ def extract_chords(audio_path, min_duration=1.0):
             chord, conf = match_chord_template_with_confidence(frame, templates, 'harmony')
             raw_chords.append((float(time), chord, float(conf)))
 
-        # Second pass: consolidate with minimum duration and higher confidence
+        # Second pass: consolidate with minimum duration and reasonable confidence
         consolidated = []
         current_chord = None
         current_start = 0.0
-        confidence_threshold = 0.35  # Higher threshold for cleaner detection
+        confidence_threshold = 0.20  # Balanced threshold - not too noisy, not too strict
 
         for time, chord, conf in raw_chords:
             if conf >= confidence_threshold: