======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '164'
                                          'artist'  'Benny Carter & Ramblers'
                                     'text_people'  ''
                                         'release'  'Decca Mx AM 371-1 unissued'
                                           'title'  "I'll Never Give In"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1937'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '98.9'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Decca Mx AM 371-1 unissued'
'TBPM' (BPM (beats per minute))                     '98.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1937-03-24'
'TIT2' (Title/songname/content description)         "I'll Never Give In"
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '164000'
'TPE1' (Lead performer(s)/Soloist(s))               'Benny Carter & Ramblers'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.83 dB'
'TXXX:replaygain_track_peak'                        '0.651985'

========================== row from database ==========================
                                              'id'  1499867
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1937/Benny Carter - I_ll Never Give In (+ Ramblers) 24-3-1937.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  164
                                           'genre'  prerock-swing
                                        'filesize'  3390978
                                           'mtime'  1620560959
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1937 I_ll (+ Ramblers) 24 1937 prerock swing
                                      'tag_artist'  Benny Carter & Ramblers
                                     'tag_release'  Decca Mx AM 371-1 unissued
                                       'tag_title'  I'll Never Give In
                                             'bpm'  98.9
                                    'search_title'  'give':5 'i':1 'ill':3 'in':6 'll':2 'never':4
                                   'search_artist'  'benny':1 'carter':2 'ramblers':3
                                  'search_release'  '1':5 '371':4 '3711':6 'am':3 'decca':1 'mx':2 'unissued':7
                                     'search_rest'  '00oldiepop':5 '1937':6 '24':11 'country':4 'exotica':2 'i':7 'jazz':1 'll':8 'oldies':3 'prerock':12 'ramblers':9,10 'swing':13
                                    'search_combo'  '00oldiepop':21 '1':14C '1937':22 '24':27 '371':13C '3711':15C 'am':12C 'benny':7B 'carter':8B 'country':20 'decca':10C 'exotica':18 'give':5A 'i':1A,23 'ill':3A 'in':6A 'jazz':17 'll':2A,24 'mx':11C 'never':4A 'oldies':19 'prerock':28 'ramblers':9B,25,26 'swing':29 'unissued':16C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1937
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560959.1562002  (2021-05-09 13:49:19)
                             'size'  3390978