======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '212'
                                          'artist'  'James Brown'
                                     'text_people'  ''
                                         'release'  'The Very Best of James Brown'
                                           'title'  'Night Train'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-JZFKS-4', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rnb', 'blues', 'rhythm and blues', 'soul', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'funk or soul-funk'
                                             'bpm'  '129.979'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Very Best of James Brown'
'TBPM' (BPM (beats per minute))                     '129.979'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul-funk'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Night Train'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'James Brown'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '4'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rnb', 'blues', 'rhythm and blues', 'soul', 'funk']
'TXXX:original release date'                        ['2007', '1997']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.93 dB'
'TXXX:replaygain_track_peak'                        '0.505769'

========================== row from database ==========================
                                              'id'  1383574
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/James Brown/James Brown__cifs9abe.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  212
                                           'genre'  funk or soul-funk
                                        'filesize'  3399506
                                           'mtime'  1620665641
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul Brown__cifs9abe funk or soul funk
                                      'tag_artist'  James Brown
                                     'tag_release'  The Very Best of James Brown
                                       'tag_title'  Night Train
                                             'bpm'  129.979
                                    'search_title'  'night':1 'train':2
                                   'search_artist'  'brown':2 'james':1
                                  'search_release'  'best':3 'brown':6 'james':5 'of':4 'the':1 'very':2
                                     'search_rest'  'brown':4 'cifs9abe':5 'funk':2 'or':6 'soul':3 'swing':1
                                    'search_combo'  'best':7C 'brown':4B,10C,14 'cifs9abe':15 'funk':12 'james':3B,9C 'night':1A 'of':8C 'or':16 'soul':13 'swing':11 'the':5C 'train':2A 'very':6C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-4', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rnb', 'blues', 'rhythm and blues', 'soul', 'funk']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620665640.9738135  (2021-05-10 18:54:00)
                             'size'  3399506