======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '184'
                                          'artist'  'Johnny Cash'
                                     'text_people'  'Merle Travis'
                                         'release'  'The Collection - Folsom Prison San Quentin & America :200'
                                           'title'  'Dark as the Dungeon'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
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 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'singer songwritergdchill', 'cover', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '103'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '145.9'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'The Collection - Folsom Prison San Quentin & America :200'
'TBPM' (BPM (beats per minute))                     '145.9'
'TCOM' (Composer)                                   'Merle Travis'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Dark as the Dungeon'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Johnny Cash'
'TPE2' (Band/orchestra/accompaniment)               'Johnny Cash'
'TPUB' (Publisher)                                  'Sony'
'TRCK' (Track number/Position in set)               '103'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.00 dB'
'TXXX:replaygain_track_peak'                        '0.629309'

========================== row from database ==========================
                                              'id'  1389177
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Johnny Cash_/Folsom Prison/103 - johnny cash - dark as the dungeon.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  184
                                           'genre'  loc-namerica-country
                                        'filesize'  4433998
                                           'mtime'  1621630281
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Cash_ 103 johnny cash dark dungeon loc namerica country
                                      'tag_artist'  Johnny Cash
                                     'tag_release'  The Collection - Folsom Prison San Quentin & America :200
                                       'tag_title'  Dark as the Dungeon
                                             'bpm'  145.9
                                    'search_title'  'as':2 'dark':1 'dungeon':4 'the':3
                                   'search_artist'  'cash':2 'johnny':1
                                  'search_release'  '200':8,9 'america':7 'collection':2 'folsom':3 'prison':4 'quentin':6 'san':5 'the':1
                                     'search_rest'  '00singer':1 '103':5 'cash':4,7 'country':12 'dark':8 'dungeon':9 'eos':3 'johnny':6 'loc':10 'namerica':11 'songwriter':2
                                    'search_combo'  '00singer':16 '103':20 '200':14C,15C 'america':13C 'as':2A 'cash':6B,19,22 'collection':8C 'country':27 'dark':1A,23 'dungeon':4A,24 'eos':18 'folsom':9C 'johnny':5B,21 'loc':25 'namerica':26 'prison':10C 'quentin':12C 'san':11C 'songwriter':17 'the':3A,7C
                                    'tag_tracknum'  103
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['country', 'singer songwritergdchill', 'cover', 'singer songwriter']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621630281.0577738  (2021-05-21 22:51:21)
                             'size'  4433998