======================== unified (from filesystem) ========================
                                         'bitrate'  '194.976'
                                        'duration'  '143'
                                          'artist'  'The Two Man Gentlemen Band'
                                     'text_people'  ''
                                         'release'  'Great Calamities'
                                           'title'  'The Titanic Disaster'
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                                      'lastfmtags'  ("['old time two man good time music at a reasonable volume for all ages', "
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                                     'discogstags'  "['bluegrass', 'folk, world, & country']"
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '13'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '144.3'
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======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Great Calamities'
'TBPM' (BPM (beats per minute))                     '144.3'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '2006-09-05'
'TIT2' (Title/songname/content description)         'The Titanic Disaster'
'TKEY' (Initial key)                                '9B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Two Man Gentlemen Band'
'TPE2' (Band/orchestra/accompaniment)               'The Two Man Gentlemen Band'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Serious Business Records'
'TRCK' (Track number/Position in set)               '10/13'
'TSO2'                                              'Two Man Gentlemen Band, The'
'TSOP' (Performer sort order)                       'Two Man Gentlemen Band, The'
'TXXX:Acoustid Id'                                  'ea7fef63-9b0e-4734-9d85-8ea24b6edf9c'
'TXXX:CATALOGNUMBER'                                'SBR-08'
'TXXX:MusicBrainz Album Artist Id'                  'ea7e6047-c4f1-45d4-9fb7-1e7b94ea33ed'
'TXXX:MusicBrainz Album Id'                         '56639028-8493-405f-bbc8-d778b0b621c2'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'ea7e6047-c4f1-45d4-9fb7-1e7b94ea33ed'
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'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['bluegrass', 'folk, world, & country']
'TXXX:lastfmtags'                                   ['old time two man good time music at a reasonable volume for all ages',
 'country',
 'bluegrass',
 'swing',
 'folk',
 'vaudevillian dixieland ragtime swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.46 dB'
'TXXX:replaygain_track_peak'                        '0.455636'
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========================== row from database ==========================
                                              'id'  1259859
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Two Man Gentlemen Band - Great Calamities (2006)/10 - The Two Man Gentlemen Band - The Titanic Disaster.mp3
                                         'working'  None
                                         'bitrate'  195
                                    'duration_sec'  143
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  3511264
                                           'mtime'  1621699536
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos (2006) 10 ifs songwriter folk
                                      'tag_artist'  The Two Man Gentlemen Band
                                     'tag_release'  Great Calamities
                                       'tag_title'  The Titanic Disaster
                                             'bpm'  144.3
                                    'search_title'  'disaster':3 'the':1 'titanic':2
                                   'search_artist'  'band':5 'gentlemen':4 'man':3 'the':1 'two':2
                                  'search_release'  'calamities':2 'great':1
                                     'search_rest'  '00singer':1 '2006':4,5 'eos':3 'folk':7 'ifs':6 'songwriter':2
                                    'search_combo'  '00singer':11 '2006':14,15 'band':8B 'calamities':10C 'disaster':3A 'eos':13 'folk':17 'gentlemen':7B 'great':9C 'ifs':16 'man':6B 'songwriter':12 'the':1A,4B 'titanic':2A 'two':5B
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['old time two man good time music at a reasonable volume for all ages', 'country', 'bluegrass', 'swing', 'folk', 'vaudevillian dixieland ragtime swing']
                                        'tag_date'  2006
                                     'discogstags'  ['bluegrass', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621699535.8731399  (2021-05-22 18:05:35)
                             'size'  3511264