======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '213'
                                          'artist'  'Al Haig'
                                     'text_people'  'Leo Robin/Ralph Rainger'
                                         'release'  'radio jazz 13'
                                           'title'  'If I Should Lose You'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-SYN-1', 'Q-BUSY-3', 'Q-GRIT-1', 'Q-PLAY-2', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-2', 'q-piano-3', 'q-vocals-1', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['julian lage group', 'piano', 'jazz', 'jazz piano', 'bebop']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '115.9'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'radio jazz 13'
'TBPM' (BPM (beats per minute))                     '115.9'
'TCOM' (Composer)                                   'Leo Robin/Ralph Rainger'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1954'
'TIT2' (Title/songname/content description)         'If I Should Lose You'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Al Haig'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Fresh Sound'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['julian lage group', 'piano', 'jazz', 'jazz piano', 'bebop']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-5.32 dB'
'TXXX:replaygain_track_peak'                        '1.006720'

========================== row from database ==========================
                                              'id'  1482121
                                            'path'  /data/Music/Bulk/00poprockelectronic/radio jazz 13/Al Haig - if i should lose you.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  213
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  6827499
                                           'mtime'  1620541313
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic if should lose you prerock jb unsorted
                                      'tag_artist'  Al Haig
                                     'tag_release'  radio jazz 13
                                       'tag_title'  If I Should Lose You
                                             'bpm'  115.9
                                    'search_title'  'i':2 'if':1 'lose':4 'should':3 'you':5
                                   'search_artist'  'al':1 'haig':2
                                  'search_release'  'jazz':2 'radio':1
                                     'search_rest'  '00poprockelectronic':1 'if':2 'jb':7 'lose':4 'prerock':6 'should':3 'unsorted':8 'you':5
                                    'search_combo'  '00poprockelectronic':10 'al':6B 'haig':7B 'i':2A 'if':1A,11 'jazz':9C 'jb':16 'lose':4A,13 'prerock':15 'radio':8C 'should':3A,12 'unsorted':17 'you':5A,14
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-3', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-1', 'q-other-2', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  ['julian lage group', 'piano', 'jazz', 'jazz piano', 'bebop']
                                        'tag_date'  1954
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620541312.9167001  (2021-05-09 08:21:52)
                             'size'  6827499