======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '171'
                                          'artist'  'Mildred Bailey'
                                     'text_people'  ''
                                         'release'  'The Complete Columbia Recordings of Mildred Bailey'
                                           'title'  'Small Fry'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['female vocalists', 'jazz vocal', 'jazz', 'vocal jazz', 'jazz divas', "
 "'blues']")
                                     'discogstags'  "['swing', 'vocal', 'jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  '23'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '103.536'
                                             'key'  '6A'
                                        'acoustid'  '6113aced-cc92-4e31-b467-78e4194f093c'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Complete Columbia Recordings of Mildred Bailey'
'TBPM' (BPM (beats per minute))                     '103.536'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Small Fry'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Mildred Bailey'
'TPE2' (Band/orchestra/accompaniment)               'Mildred Bailey'
'TPOS' (Part of a set)                              '5/10'
'TPUB' (Publisher)                                  'Mosaic Records'
'TRCK' (Track number/Position in set)               '20/23'
'TSO2'                                              'Bailey, Mildred'
'TSOP' (Performer sort order)                       'Bailey, Mildred'
'TXXX:ASIN'                                         'B00005MNJD'
'TXXX:Acoustid Id'                                  '6113aced-cc92-4e31-b467-78e4194f093c'
'TXXX:MusicBrainz Album Artist Id'                  'e079ff65-ad41-48e9-b6ce-8cdb0db64802'
'TXXX:MusicBrainz Album Id'                         'd6cd75d9-007d-4cb7-ab02-ae19944f77f0'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'e079ff65-ad41-48e9-b6ce-8cdb0db64802'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['swing', 'vocal', 'jazz']
'TXXX:lastfmtags'                                   ['female vocalists', 'jazz vocal', 'jazz', 'vocal jazz', 'jazz divas', 'blues']
'TXXX:q-bass'                                       '1'
'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-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.67 dB'
'TXXX:replaygain_track_peak'                        '0.715247'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'4cd19e15-4f80-4fe4-b9e6-5a953ff354d6')

========================== row from database ==========================
                                              'id'  1132388
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Mildred Bailey & Her Orch - Small Fry - Vocalion 4224.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  171
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  2771336
                                           'mtime'  1620524667
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s and 1930s popular & Her Orch Vocalion 4224 prerock jb jazz vocal
                                      'tag_artist'  Mildred Bailey
                                     'tag_release'  The Complete Columbia Recordings of Mildred Bailey
                                       'tag_title'  Small Fry
                                             'bpm'  103.536
                                    'search_title'  'fry':2 'small':1
                                   'search_artist'  'bailey':2 'mildred':1
                                  'search_release'  'bailey':7 'columbia':3 'complete':2 'mildred':6 'of':5 'recordings':4 'the':1
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':8 '4224':13 'and':7 'country':4 'exotica':2 'her':10 'jazz':1 'jb':15 'oldies':3 'orch':11 'popular':9 'prerock':14 'vocal':16 'vocalion':12
                                    'search_combo'  '00oldiepop':16 '1920s':17 '1930s':19 '4224':24 'and':18 'bailey':4B,11C 'columbia':7C 'complete':6C 'country':15 'exotica':13 'fry':2A 'her':21 'jazz':12 'jb':26 'mildred':3B,10C 'of':9C 'oldies':14 'orch':22 'popular':20 'prerock':25 'recordings':8C 'small':1A 'the':5C 'vocal':27 'vocalion':23
                                    'tag_tracknum'  20
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', '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-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['female vocalists', 'jazz vocal', 'jazz', 'vocal jazz', 'jazz divas', 'blues']
                                        'tag_date'  1935
                                     'discogstags'  ['swing', 'vocal', 'jazz']

============================== file details ==============================
                                           'mtime'  1620524667.4274907  (2021-05-09 03:44:27)
                             'size'  2771336