======================== unified (from filesystem) ========================
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                                        'duration'  '409'
                                          'artist'  'Ring Henry Scott and Group'
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                                           'title'  'Hammer Ring'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
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                                     'tracknumber'  '8'
                                      'tracktotal'  '11'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
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======================== rawer (from filesystem) ========================

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Wake Up Dead Man: Black Convict Worksongs From Texas Prisons'
'TBPM' (BPM (beats per minute))                     '91.846'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDOR' (Original release time)                      '1994'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Hammer Ring'
'TKEY' (Initial key)                                '7A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Ring Henry Scott and Group'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Rounder'
'TRCK' (Track number/Position in set)               '8/11'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Scott, Ring Henry and Group'
'TXXX:ASIN'                                         'B0000002V1'
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'TXXX:BARCODE'                                      '011661201323'
'TXXX:CATALOGNUMBER'                                'CDROUN2013'
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'TXXX:MusicBrainz Album Id'                         'a6b5375b-5dcb-43a8-996d-2064da478c64'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'cfd0d43c-eb55-4aef-a8da-7c7713a97e3c'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
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'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.60 dB'
'TXXX:replaygain_track_peak'                        '0.827855'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/W.D. Alexander and Group - Black Convict Worksongs From Texas Prisons/08 Hammer Ring - Henry Scott.mp3
                                         'working'  None
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                                    'duration_sec'  409
                                           'genre'  prerock-jb-blues
                                        'filesize'  7565737
                                           'mtime'  1620402707
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                                       'tag_title'  Hammer Ring
                                             'bpm'  91.846
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                                   'search_artist'  'and':4 'group':5 'henry':2 'ring':1 'scott':3
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                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1994
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402706.8917644  (2021-05-07 17:51:46)
                             'size'  7565737