======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '503'
                                          'artist'  'John Coltrane'
                                     'text_people'  ''
                                         'release'  'Coltrane Time'
                                           'title'  'Double Clutching'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-2', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-3', 'q-drums-2', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']"
                                     'discogstags'  "['jazz', 'hard bop', 'modal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '4'
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '119.265'
                                             'key'  '6A'
                                        'acoustid'  'f0c7536a-2ee2-4f39-809e-5f1bc8b8692d'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Coltrane Time'
'TBPM' (BPM (beats per minute))                     '119.265'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDOR' (Original release time)                      '1963'
'TDRC' (Recording time)                             '1940'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Tom Wilson']])
'TIT2' (Title/songname/content description)         'Double Clutching'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'John Coltrane'
'TPE2' (Band/orchestra/accompaniment)               'John Coltrane'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Blue Note'
'TRCK' (Track number/Position in set)               '4/4'
'TSO2'                                              'Coltrane, John'
'TSOP' (Performer sort order)                       'Coltrane, John'
'TXXX:ASIN'                                         'B000005HDQ'
'TXXX:Acoustid Id'                                  'f0c7536a-2ee2-4f39-809e-5f1bc8b8692d'
'TXXX:BARCODE'                                      '077778446125'
'TXXX:CATALOGNUMBER'                                'CDP 7 84461 2'
'TXXX:MusicBrainz Album Artist Id'                  'b625448e-bf4a-41c3-a421-72ad46cdb831'
'TXXX:MusicBrainz Album Id'                         'e644c135-34bc-33e2-8cff-37db13e65c38'
'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: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', 'hard bop', 'modal']
'TXXX:lastfmtags'                                   ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.494096'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'e2bd593d-daa9-43ec-b4d5-e70cdbbdd7f2')

========================== row from database ==========================
                                              'id'  1360160
                                            'path'  /data/Music/Bulk/00poprockelectronic/John Coltrane/Coltrane Time [1958]/John Coltrane - 04 - Double Clutching.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  503
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  8059027
                                           'mtime'  1620540878
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1958] 04 prerock jb jazz unsorted
                                      'tag_artist'  John Coltrane
                                     'tag_release'  Coltrane Time
                                       'tag_title'  Double Clutching
                                             'bpm'  119.265
                                    'search_title'  'clutching':2 'double':1
                                   'search_artist'  'coltrane':2 'john':1
                                  'search_release'  'coltrane':1 'time':2
                                     'search_rest'  '00poprockelectronic':1 '1958':2,3 'jazz':6 'jb':5 'prerock':4 'unsorted':7
                                    'search_combo'  '00poprockelectronic':7 '1958':8,9 'clutching':2A 'coltrane':4B,5C 'double':1A 'jazz':12 'jb':11 'john':3B 'prerock':10 'time':6C 'unsorted':13
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  6A
                                           '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-2', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['free jazz', 'avant garde', 'jazz', 'saxophone', 'bebop']
                                        'tag_date'  1940
                                     'discogstags'  ['jazz', 'hard bop', 'modal']

============================== file details ==============================
                                           'mtime'  1620540877.9842253  (2021-05-09 08:14:37)
                             'size'  8059027