======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '445'
                                          'artist'  'John Coltrane'
                                     'text_people'  ''
                                         'release'  'A Love Supreme'
                                           'title'  'A Love Supreme, Part 2: Resolution'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-3', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']"
                                     'discogstags'  "['jazz', 'free jazz', 'post bop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '3'
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-newer-experimental or free'
                                             'bpm'  '89'
                                             'key'  '4B'
                                        'acoustid'  '4d8b95e1-485e-407f-ae71-054f64704062'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '2'
'COMM:iTunes_CDDB_1:eng'                            '1C07C003+149015+3+182+35275+68692'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '2'
'PRIV:AverageLevel:Æ\x10\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xc6\x10\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'A Love Supreme'
'TBPM' (BPM (beats per minute))                     '89'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-newer-experimental or free'
'TDOR' (Original release time)                      '1965'
'TDRC' (Recording time)                             '1965'
'TENC' (Encoded by)                                 'iTunes v4.7.1'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Bob Thiele'], ['engineer', 'Rudy van Gelder']])
'TIT2' (Title/songname/content description)         'A Love Supreme, Part 2: Resolution'
'TKEY' (Initial key)                                '4B'
'TMED' (Media type)                                 '12" Vinyl'
'TPE1' (Lead performer(s)/Soloist(s))               'John Coltrane'
'TPE2' (Band/orchestra/accompaniment)               'John Coltrane'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'impulse!'
'TRCK' (Track number/Position in set)               '2/3'
'TSO2'                                              'Coltrane, John'
'TSOP' (Performer sort order)                       'Coltrane, John'
'TXXX:Acoustid Id'                                  '4d8b95e1-485e-407f-ae71-054f64704062'
'TXXX:Artists'                                      'John Coltrane'
'TXXX:CATALOGNUMBER'                                'A 77'
'TXXX:MusicBrainz Album Artist Id'                  'b625448e-bf4a-41c3-a421-72ad46cdb831'
'TXXX:MusicBrainz Album Id'                         '2d2b2557-5000-37ae-b18f-1fec5d66b67f'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'b625448e-bf4a-41c3-a421-72ad46cdb831'
'TXXX:MusicBrainz Release Group Id'                 '77cf47ba-58cd-3f3d-a5f9-79bf89860421'
'TXXX:MusicBrainz Release Track Id'                 'e58c2935-a5cf-32b6-8331-9bd4ba818d7a'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['jazz', 'free jazz', 'post bop']
'TXXX:lastfmtags'                                   ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
'TXXX:originalyear'                                 '1965'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.91 dB'
'TXXX:replaygain_track_peak'                        '0.645771'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'20d05d30-61bb-49cd-95da-b338a8c76a07')

========================== row from database ==========================
                                              'id'  1324649
                                            'path'  /data/Music/Bulk/00poprockelectronic/John Coltrane/A Love Supreme [1965]/02 - John Coltrane - Resolution.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  445
                                           'genre'  prerock-jb-jazz-newer-experimental or free
                                        'filesize'  10772511
                                           'mtime'  1620570241
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1965] 02 prerock jb jazz newer experimental or free
                                      'tag_artist'  John Coltrane
                                     'tag_release'  A Love Supreme
                                       'tag_title'  A Love Supreme, Part 2: Resolution
                                             'bpm'  89.0
                                    'search_title'  '2':6,7 'a':1 'love':2 'part':5 'resolution':8 'supreme':3,4
                                   'search_artist'  'coltrane':2 'john':1
                                  'search_release'  'a':1 'love':2 'supreme':3
                                     'search_rest'  '00poprockelectronic':1 '1965':2,3 'experimental':8 'free':10 'jazz':6 'jb':5 'newer':7 'or':9 'prerock':4
                                    'search_combo'  '00poprockelectronic':14 '1965':15,16 '2':6A,7A 'a':1A,11C 'coltrane':10B 'experimental':21 'free':23 'jazz':19 'jb':18 'john':9B 'love':2A,12C 'newer':20 'or':22 'part':5A 'prerock':17 'resolution':8A 'supreme':3A,4A,13C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
                                        'tag_date'  1965
                                     'discogstags'  ['jazz', 'free jazz', 'post bop']

============================== file details ==============================
                                           'mtime'  1620570240.7893217  (2021-05-09 16:24:00)
                             'size'  10772511