======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '396'
                                          'artist'  'Goran Bregović'
                                     'text_people'  ''
                                         'release'  'Underground'
                                           'title'  'War'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['soundtrack', 'gypsy', 'balkan', 'folk', 'ethnic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'loc-style-gypsy or balkan or klezmer;mi-brass'
                                             'bpm'  '144.955'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Underground'
'TBPM' (BPM (beats per minute))                     '144.955'
'TCON' (Content type, a.k.a. Genre)                 ['loc-style-gypsy or balkan or klezmer', 'mi-brass']
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'War'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Goran Bregović'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['soundtrack', 'gypsy', 'balkan', 'folk', 'ethnic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.76 dB'
'TXXX:replaygain_track_peak'                        '0.650837'

========================== row from database ==========================
                                              'id'  924620
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Goran Bregovic/Underground OST 1995/07 War Goran Bregovic.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  396
                                           'genre'  loc-style-gypsy or balkan or klezmer;mi-brass
                                        'filesize'  6350674
                                           'mtime'  1620528160
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe Bregovic OST 1995 07 Bregovic loc style gypsy balkan klezmer;mi brass
                                      'tag_artist'  Goran Bregović
                                     'tag_release'  Underground
                                       'tag_title'  War
                                             'bpm'  144.955
                                    'search_title'  'war':1
                                   'search_artist'  'bregovic':2,3 'goran':1
                                  'search_release'  'underground':1
                                     'search_rest'  '00mid':1 '1995':6 'balkan':10 'brass':15 'bregovic':4 'europe':3 'gypsy':9 'klezmer':11,13 'loc':7 'mi':12,14 'north':2 'ost':5 'style':8
                                    'search_combo'  '00mid':6 '1995':11 'balkan':15 'brass':20 'bregovic':3B,4B,9 'europe':8 'goran':2B 'gypsy':14 'klezmer':16,18 'loc':12 'mi':17,19 'north':7 'ost':10 'style':13 'underground':5C 'war':1A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'gypsy', 'balkan', 'folk', 'ethnic']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528159.928041  (2021-05-09 04:42:39)
                             'size'  6350674