======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '112'
                                          'artist'  'Jimmie F. Rodgers'
                                     'text_people'  'Al Hoffman/Dick Manning/Mark Markwell'
                                         'release'  'The Best of Jimmie Rodgers [Rhino]'
                                           'title'  "I'm Never Gonna Tell"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'folk', 'blues', 'bluegrass', 'classic country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '104.606'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-224 POS 36'
'COMM:ID3v1 Comment:XXX'                            '59-224 POS 36'
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'PRIV:WM/WMCollectionID:×ù \x86iê\x99K\x92Nü\x96òνÃ'  PRIV(owner='WM/WMCollectionID', data=b'\xd7\xf9 \x86i\xea\x99K\x92N\xfc\x96\xf2\xce\xbd\xc3')
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'TALB' (Album/Movie/Show title)                     'The Best of Jimmie Rodgers [Rhino]'
'TBPM' (BPM (beats per minute))                     '104.606'
'TCOM' (Composer)                                   'Al Hoffman/Dick Manning/Mark Markwell'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         "I'm Never Gonna Tell"
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '112893'
'TPE1' (Lead performer(s)/Soloist(s))               'Jimmie Rodgers'
'TPE2' (Band/orchestra/accompaniment)               'Jimmie F. Rodgers'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'folk', 'blues', 'bluegrass', 'classic country']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.46 dB'
'TXXX:replaygain_track_peak'                        '0.678037'

========================== row from database ==========================
                                              'id'  1520060
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-224 - Jimmie Rodgers - I_m Never Gonna Tell.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  112
                                           'genre'  prerock-unsorted
                                        'filesize'  4517761
                                           'mtime'  1621698405
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 224 I_m prerock unsorted
                                      'tag_artist'  Jimmie F. Rodgers
                                     'tag_release'  The Best of Jimmie Rodgers [Rhino]
                                       'tag_title'  I'm Never Gonna Tell
                                             'bpm'  104.606
                                    'search_title'  'gonna':5 'i':1 'im':3 'm':2 'never':4 'tell':6
                                   'search_artist'  'f':2,3 'jimmie':1 'rodgers':4
                                  'search_release'  'best':2 'jimmie':4 'of':3 'rhino':6,7 'rodgers':5 'the':1
                                     'search_rest'  '00oldiepop':5 '1959':6 '224':8 '59':7 'country':4 'exotica':2 'i':9 'jazz':1 'm':10 'oldies':3 'prerock':11 'unsorted':12
                                    'search_combo'  '00oldiepop':22 '1959':23 '224':25 '59':24 'best':12C 'country':21 'exotica':19 'f':8B,9B 'gonna':5A 'i':1A,26 'im':3A 'jazz':18 'jimmie':7B,14C 'm':2A,27 'never':4A 'of':13C 'oldies':20 'prerock':28 'rhino':16C,17C 'rodgers':10B,15C 'tell':6A 'the':11C 'unsorted':29
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['country', 'folk', 'blues', 'bluegrass', 'classic country']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698405.4433475  (2021-05-22 17:46:45)
                             'size'  4517761