======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '287'
                                          'artist'  'Nick Cave & The Bad Seeds'
                                     'text_people'  ''
                                         'release'  'Gothic Club Classics, Volume 2'
                                           'title'  'The Mercyseat (live)'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['alternative rock', 'alternative', 'post punk', 'singer songwriter', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-goth or gothrock-gothrock'
                                             'bpm'  '91.888'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Gothic Club Classics, Volume 2'
'TBPM' (BPM (beats per minute))                     '91.888'
'TCON' (Content type, a.k.a. Genre)                 'eid-goth or gothrock-gothrock'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'The Mercyseat (live)'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nick Cave & The Bad Seeds'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['alternative rock', 'alternative', 'post punk', 'singer songwriter', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.35 dB'
'TXXX:replaygain_track_peak'                        '0.451873'

========================== row from database ==========================
                                              'id'  1397451
                                            'path'  /data/Music/Bulk/00dwimp/00ebm-industrial-darkwave-goth/Gothic_Club_Classics_Volume_2/CD_1/07_-_Nick_Cave_And_The_Bad_Seeds_-_The_Mercyseat_(Live).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  287
                                           'genre'  eid-goth or gothrock-gothrock
                                        'filesize'  6896766
                                           'mtime'  1620300632
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00ebm industrial darkwave goth Gothic_Club_Classics_Volume_2 CD_1 07_ _Nick_Cave_And_The_Bad_Seeds_ _The_Mercyseat_(Live) eid goth or gothrock gothrock
                                      'tag_artist'  Nick Cave & The Bad Seeds
                                     'tag_release'  Gothic Club Classics, Volume 2
                                       'tag_title'  The Mercyseat (live)
                                             'bpm'  91.888
                                    'search_title'  'live':3,4 'mercyseat':2 'the':1
                                   'search_artist'  'bad':4 'cave':2 'nick':1 'seeds':5 'the':3
                                  'search_release'  '2':6 'classics':3,4 'club':2 'gothic':1 'volume':5
                                     'search_rest'  '00dwimp':1 '00ebm':2 '07':13 '1':12 '2':10 'and':16 'bad':18 'cave':15 'cd':11 'classics':8 'club':7 'darkwave':4 'eid':26 'goth':5 'gothic':6 'gothrock':28 'industrial':3 'live':22,25 'mercyseat':21,24 'nick':14 'or':27 'seeds':19 'the':17,20,23 'volume':9
                                    'search_combo'  '00dwimp':16 '00ebm':17 '07':28 '1':27 '2':15C,25 'and':31 'bad':8B,33 'cave':6B,30 'cd':26 'classics':12C,13C,23 'club':11C,22 'darkwave':19 'eid':41 'goth':20 'gothic':10C,21 'gothrock':43 'industrial':18 'live':3A,4A,37,40 'mercyseat':2A,36,39 'nick':5B,29 'or':42 'seeds':9B,34 'the':1A,7B,32,35,38 'volume':14C,24
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['alternative rock', 'alternative', 'post punk', 'singer songwriter', 'rock']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620300631.7160418  (2021-05-06 13:30:31)
                             'size'  6896766