======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '321'
                                          'artist'  'Laurent Wolf vs Ritmo Dynamic'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Saxolinda (EiTiBi white label'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['techno']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '128.251'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TBPM' (BPM (beats per minute))                     '128.251'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Saxolinda (EiTiBi white label'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Laurent Wolf vs Ritmo Dynamic'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   'techno'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.63 dB'
'TXXX:replaygain_track_peak'                        '0.541314'

========================== row from database ==========================
                                              'id'  1491221
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/Laurent Wolf__cifs3a3f.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  321
                                           'genre'  electronic-unsorted
                                        'filesize'  7724638
                                           'mtime'  1620592429
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch Wolf__cifs3a3f electronic unsorted
                                      'tag_artist'  Laurent Wolf vs Ritmo Dynamic
                                     'tag_release'  None
                                       'tag_title'  Saxolinda (EiTiBi white label
                                             'bpm'  128.251
                                    'search_title'  'bi':9 'ei':6,7 'eitibi':2,3 'label':5 'saxolinda':1 'ti':8 'white':4
                                   'search_artist'  'dynamic':5 'laurent':1 'ritmo':4 'vs':3 'wolf':2
                                  'search_release'  
                                     'search_rest'  '00dutch':4 '00mid':1 'cifs3a3f':6 'electronic':7 'europe':3 'north':2 'unsorted':8 'wolf':5
                                    'search_combo'  '00dutch':18 '00mid':15 'bi':9A 'cifs3a3f':20 'dynamic':14B 'ei':6A,7A 'eitibi':2A,3A 'electronic':21 'europe':17 'label':5A 'laurent':10B 'north':16 'ritmo':13B 'saxolinda':1A 'ti':8A 'unsorted':22 'vs':12B 'white':4A 'wolf':11B,19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['techno']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592428.9540102  (2021-05-09 22:33:48)
                             'size'  7724638