======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '354'
                                          'artist'  'John Coltrane'
                                     'text_people'  ''
                                         'release'  'The Atlantic Studio Album Collection'
                                           'title'  'Like Sonny'
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 "'Q-PIANO-2', 'q-chart-4', 'q-drums-2', 'q-other-3', 'q-vocals-1', "
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                                      'lastfmtags'  "['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '8'
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-newer-experimental or free'
                                             'bpm'  '145'
                                             'key'  '6A'
                                        'acoustid'  '73b66557-6c3c-4118-ba01-6f3ea700e870'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Atlantic Studio Album Collection'
'TBPM' (BPM (beats per minute))                     '145'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-newer-experimental or free'
'TDOR' (Original release time)                      '2015'
'TDRC' (Recording time)                             '2015-02-13'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['', '']])
'TIT2' (Title/songname/content description)         'Like Sonny'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'John Coltrane'
'TPE2' (Band/orchestra/accompaniment)               'John Coltrane'
'TPOS' (Part of a set)                              '2/8'
'TPUB' (Publisher)                                  'Rhino Atlantic'
'TRCK' (Track number/Position in set)               '6/8'
'TSO2'                                              'Coltrane, John'
'TSOP' (Performer sort order)                       'Coltrane, John'
'TSST' (Set subtitle)                               'Coltrane Jazz'
'TXXX:Acoustid Id'                                  '73b66557-6c3c-4118-ba01-6f3ea700e870'
'TXXX:Artists'                                      'John Coltrane'
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'TXXX:Mp3gain_minmax'                               '000,197'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:MusicBrainz Album Artist Id'                  'b625448e-bf4a-41c3-a421-72ad46cdb831'
'TXXX:MusicBrainz Album Id'                         '2b308634-ca7b-482f-a6d0-27add4240127'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'other/compilation'
'TXXX:MusicBrainz Artist Id'                        'b625448e-bf4a-41c3-a421-72ad46cdb831'
'TXXX:MusicBrainz Release Group Id'                 'e0f40c1b-478b-46e3-ab0d-5dcc806b0d9c'
'TXXX:MusicBrainz Release Track Id'                 'c08bf417-8eb6-49ef-a557-0e0c2476d094'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
'TXXX:originalyear'                                 '2015'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.88 dB'
'TXXX:replaygain_track_peak'                        '0.673540'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'1e02eaeb-3b74-45ad-a681-9d3e9876cacf')

========================== row from database ==========================
                                              'id'  1325660
                                            'path'  /data/Music/Bulk/00poprockelectronic/John Coltrane/Coltrane Jazz [1959]/John Coltrane - 06 - Like Sonny.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  354
                                           'genre'  prerock-jb-jazz-newer-experimental or free
                                        'filesize'  5744644
                                           'mtime'  1620570246
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Jazz [1959] 06 prerock jb jazz newer experimental or free
                                      'tag_artist'  John Coltrane
                                     'tag_release'  The Atlantic Studio Album Collection
                                       'tag_title'  Like Sonny
                                             'bpm'  145.0
                                    'search_title'  'like':1 'sonny':2
                                   'search_artist'  'coltrane':2 'john':1
                                  'search_release'  'album':4 'atlantic':2 'collection':5 'studio':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 '1959':3,4 'experimental':8 'free':10 'jazz':2 'jb':6 'newer':7 'or':9 'prerock':5
                                    'search_combo'  '00poprockelectronic':10 '1959':12,13 'album':8C 'atlantic':6C 'collection':9C 'coltrane':4B 'experimental':17 'free':19 'jazz':11 'jb':15 'john':3B 'like':1A 'newer':16 'or':18 'prerock':14 'sonny':2A 'studio':7C 'the':5C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
                                        'tag_date'  2015
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620570246.0389109  (2021-05-09 16:24:06)
                             'size'  5744644