======================== unified (from filesystem) ========================
                                         'bitrate'  '133.159'
                                        'duration'  '175'
                                          'artist'  'Sylvester Weaver & Walter Beasley'
                                     'text_people'  ''
                                         'release'  'The Slide Guitar: Bottles, Knives & Steel'
                                           'title'  'Bottleneck Blues'
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '19'
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '102'
                                             'key'  '10B'
                                        'acoustid'  'dee59341-b5c0-46dd-9b2b-0971701680c5'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:eng'                            'ÜberStandard - UberNet.org'
'COMM:iTunNORM:eng'                                 'ÜberStandard - UberNet.org'
'TALB' (Album/Movie/Show title)                     'The Slide Guitar: Bottles, Knives & Steel'
'TBPM' (BPM (beats per minute))                     '102'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDOR' (Original release time)                      '1990'
'TDRC' (Recording time)                             '1990'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Bottleneck Blues'
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Sylvester Weaver & Walter Beasley'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'CBS'
'TRCK' (Track number/Position in set)               '1/19'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Weaver, Sylvester & Beasley, Walter'
'TXXX:ASIN'                                         'B000002752'
'TXXX:Acoustid Id'                                  'dee59341-b5c0-46dd-9b2b-0971701680c5'
'TXXX:Artists'                                      'Sylvester Weaver/Walter Beasley'
'TXXX:CATALOGNUMBER'                                '46218'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '1a2745e9-bdd3-44b4-904c-17fb58cc8db2'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
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'TXXX:MusicBrainz Release Group Id'                 '02460fb2-931b-3a02-beb2-2f1dec5a3f18'
'TXXX:MusicBrainz Release Track Id'                 'bad1a13f-9264-3c1e-90cb-bfadf7a56a6f'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:originalyear'                                 '1990'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.24 dB'
'TXXX:replaygain_track_peak'                        '1.004067'
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========================== row from database ==========================
                                              'id'  1384164
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/slide guitar (1927-1965) - bottles, knives & steel/Sylvester Weaver & Walter Beasley - Bottleneck blues.mp3
                                         'working'  None
                                         'bitrate'  133
                                    'duration_sec'  175
                                           'genre'  prerock-jb-blues
                                        'filesize'  2964134
                                           'mtime'  1620402821
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country slide guitar (1927 1965) bottles, knives steel blues prerock jb blues
                                      'tag_artist'  Sylvester Weaver & Walter Beasley
                                     'tag_release'  The Slide Guitar: Bottles, Knives & Steel
                                       'tag_title'  Bottleneck Blues
                                             'bpm'  102.0
                                    'search_title'  'blues':2 'bottleneck':1
                                   'search_artist'  'beasley':4 'sylvester':1 'walter':3 'weaver':2
                                  'search_release'  'bottles':5,6 'guitar':3,4 'knives':7 'slide':2 'steel':8 'the':1
                                     'search_rest'  '1927':7,8 '1965':9,10 'blues':15 'bottles':11,12 'country':4 'exotica':2 'guitar':6 'jazz':1 'jb':17 'knives':13 'oldies':3 'prerock':16 'slide':5 'steel':14
                                    'search_combo'  '1927':21,22 '1965':23,24 'beasley':6B 'blues':2A,29 'bottleneck':1A 'bottles':11C,12C,25,26 'country':18 'exotica':16 'guitar':9C,10C,20 'jazz':15 'jb':31 'knives':13C,27 'oldies':17 'prerock':30 'slide':8C,19 'steel':14C,28 'sylvester':3B 'the':7C 'walter':5B 'weaver':4B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1990
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402821.1233356  (2021-05-07 17:53:41)
                             'size'  2964134