======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '192'
                                          'artist'  'Libby Holman'
                                     'text_people'  ''
                                         'release'  'Brunswick  4445'
                                           'title'  "Moanin' Low -7-1929"
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['30s', 'female vocalists', 'jazz', '40s', 'jazz vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1929'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '99.8'
                                             'key'  '8A'
                                        '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)                     'Brunswick  4445'
'TBPM' (BPM (beats per minute))                     '99.8'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1929'
'TIT2' (Title/songname/content description)         "Moanin' Low -7-1929"
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '192000'
'TPE1' (Lead performer(s)/Soloist(s))               'Libby Holman'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['30s', 'female vocalists', 'jazz', '40s', 'jazz vocal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.89 dB'
'TXXX:replaygain_track_peak'                        '0.717009'

========================== row from database ==========================
                                              'id'  1513758
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1929/Libby Holman - Moanin_ Low -7-1929.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  192
                                           'genre'  prerock-unsorted
                                        'filesize'  3898527
                                           'mtime'  1620385807
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop Moanin_ prerock unsorted
                                      'tag_artist'  Libby Holman
                                     'tag_release'  Brunswick  4445
                                       'tag_title'  Moanin' Low -7-1929
                                             'bpm'  99.8
                                    'search_title'  '1929':5 '7':4 '71929':6 'low':3 'moanin':1,2
                                   'search_artist'  'holman':2 'libby':1
                                  'search_release'  '4445':2 'brunswick':1
                                     'search_rest'  '00oldiepop':5 'country':4 'exotica':2 'jazz':1 'moanin':6 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':15 '1929':5A '4445':10C '7':4A '71929':6A 'brunswick':9C 'country':14 'exotica':12 'holman':8B 'jazz':11 'libby':7B 'low':3A 'moanin':1A,2A,16 'oldies':13 'prerock':17 'unsorted':18
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['30s', 'female vocalists', 'jazz', '40s', 'jazz vocal']
                                        'tag_date'  1929
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385806.9941392  (2021-05-07 13:10:06)
                             'size'  3898527