======================== unified (from filesystem) ========================
                                         'bitrate'  '146.969'
                                        'duration'  '731'
                                          'artist'  'Charles Mingus with Jean Shepherd'
                                     'text_people'  'Charles Mingus'
                                         'release'  'The Beat Generation'
                                           'title'  'The Clown'
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  '17'
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-bebop or cool or beat'
                                             'bpm'  '123'
                                             'key'  '4A'
                                        'acoustid'  '799601f6-116e-432f-bd96-464316cfabc2'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Beat Generation'
'TBPM' (BPM (beats per minute))                     '123'
'TCMP'                                              '1'
'TCOM' (Composer)                                   'Charles Mingus'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-bebop or cool or beat'
'TDOR' (Original release time)                      '1992'
'TDRC' (Recording time)                             '1992-11-24'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'James Austin']])
'TIT2' (Title/songname/content description)         'The Clown'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Charles Mingus with Jean Shepherd'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/3'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '16/17'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Mingus, Charles with Shepherd, Jean'
'TSRC' (ISRC (international standard recording code))  'USAT20000724'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:ASIN'                                         'B0000032DM'
'TXXX:Acoustid Id'                                  '799601f6-116e-432f-bd96-464316cfabc2'
'TXXX:Artists'                                      'Charles Mingus/Jean Shepherd'
'TXXX:AverageLevel'                                 '3963'
'TXXX:BARCODE'                                      '081227028121'
'TXXX:CATALOGNUMBER'                                '70281'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '0'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'e42753f3-76c7-453d-985d-ffbae2367e62'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'f3b8e107-abe8-4743-b6a3-4a4ee995e71f/2cc6a3be-b1cb-4e7c-bbb8-c6a76181857c'
'TXXX:MusicBrainz Release Group Id'                 '1d957aca-1e41-36fe-9010-a27527e822d7'
'TXXX:MusicBrainz Release Track Id'                 '3f18d005-d8e3-3f40-9863-bd26638662e6'
'TXXX:PeakValue'                                    '30753'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:WM/EncodingTime'                              '1701673984'
'TXXX:WM/MediaPrimaryClassID'                       '{D1607DBC-E323-4BE2-86A1-48A42A28441E}'
'TXXX:WM/Provider'                                  'AMG'
'TXXX:WM/ProviderRating'                            '8'
'TXXX:WM/ProviderStyle'                             'Rock'
'TXXX:WM/UniqueFileIdentifier'                      'AMGa_id=R    22881;AMGp_id=VA;AMGt_id=T   875937'
'TXXX:WM/WMADRCAverageReference'                    '4355'
'TXXX:WM/WMADRCPeakReference'                       '30719'
'TXXX:WM/Year'                                      '1992'
'TXXX:WMFSDKNeeded'                                 '0.0.0.0000'
'TXXX:WMFSDKVersion'                                '9.00.00.2980'
'TXXX:originalyear'                                 '1992'
'TXXX:q-bass'                                       '3'
'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-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.21 dB'
'TXXX:replaygain_track_peak'                        '0.788410'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8035b715-d01e-42d3-8bd0-81f2bf5aa5c7')

========================== row from database ==========================
                                              'id'  968416
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The.Beat.Generation/The Beat Generation Disc 1/The Beat Generation - 16 - Charles Mingus, Jean Shepherd - The Clown.wma.mp3
                                         'working'  None
                                         'bitrate'  146
                                    'duration_sec'  731
                                           'genre'  prerock-jb-jazz-bebop or cool or beat
                                        'filesize'  13476842
                                           'mtime'  1620524014
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country The.Beat.Generation Disc 1 16 Mingus, Clown.wma prerock jb jazz bebop or cool or beat
                                      'tag_artist'  Charles Mingus with Jean Shepherd
                                     'tag_release'  The Beat Generation
                                       'tag_title'  The Clown
                                             'bpm'  123.0
                                    'search_title'  'clown':2 'the':1
                                   'search_artist'  'charles':1 'jean':4 'mingus':2 'shepherd':5 'with':3
                                  'search_release'  'beat':2 'generation':3 'the':1
                                     'search_rest'  '1':10 'beat':6,21 'bebop':18 'clown':13 'clownwma':15 'cool':20 'country':4 'disc':9 'exotica':2 'generation':7 'jazz':1 'jb':17 'mingus':11,12 'oldies':3 'or':19 'prerock':16 'the':5 'thebeatgeneration':8 'wma':14
                                    'search_combo'  '1':20 'beat':9C,16,31 'bebop':28 'charles':3B 'clown':2A,23 'clownwma':25 'cool':30 'country':14 'disc':19 'exotica':12 'generation':10C,17 'jazz':11 'jb':27 'jean':6B 'mingus':4B,21,22 'oldies':13 'or':29 'prerock':26 'shepherd':7B 'the':1A,8C,15 'thebeatgeneration':18 'with':5B 'wma':24
                                    'tag_tracknum'  16
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524013.632628  (2021-05-09 03:33:33)
                             'size'  13476842