======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '145'
                                          'artist'  'Mitch Miller'
                                     'text_people'  'K.J. Alford/M. Arnold'
                                         'release'  'Greatest Hits [Columbia/Legacy]'
                                           'title'  'March From The River Kwai And Colonel Bogey'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'soundtrack', 'oldies', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '107.778'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-161 POS 20'
'COMM:ID3v1 Comment:XXX'                            '58-161 POS 20'
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'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
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'PRIV:WM/WMCollectionID:¥\x93\x85a7\x86QB¯i\x0b\x1fø\x15û\x91'  PRIV(owner='WM/WMCollectionID', data=b'\xa5\x93\x85a7\x86QB\xafi\x0b\x1f\xf8\x15\xfb\x91')
'PRIV:WM/WMContentID:¸¨\x18éP×òD\x86ƶ\x139[">'     PRIV(owner='WM/WMContentID', data=b'\xb8\xa8\x18\xe9P\xd7\xf2D\x86\xc6\xb6\x139[">')
'TALB' (Album/Movie/Show title)                     'Greatest Hits [Columbia/Legacy]'
'TBPM' (BPM (beats per minute))                     '107.778'
'TCOM' (Composer)                                   'K.J. Alford/M. Arnold'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'March From The River Kwai And Colonel Bogey'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '145600'
'TPE1' (Lead performer(s)/Soloist(s))               'Mitch Miller & His Orch. & Chorus'
'TPE2' (Band/orchestra/accompaniment)               'Mitch Miller'
'TPUB' (Publisher)                                  'Columbia/Legacy'
'TRCK' (Track number/Position in set)               '1'
'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'                                   ['instrumental', 'soundtrack', 'oldies', 'easy listening']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.49 dB'
'TXXX:replaygain_track_peak'                        '0.498889'

========================== row from database ==========================
                                              'id'  1428950
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-161 - Mitch Miller & His Orch. and Chorus - March From The River Kwai And Colonel Bogey.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  145
                                           'genre'  prerock-unsorted
                                        'filesize'  5826446
                                           'mtime'  1621698349
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 161 & His Orch. and Chorus prerock unsorted
                                      'tag_artist'  Mitch Miller
                                     'tag_release'  Greatest Hits [Columbia/Legacy]
                                       'tag_title'  March From The River Kwai And Colonel Bogey
                                             'bpm'  107.778
                                    'search_title'  'and':6 'bogey':8 'colonel':7 'from':2 'kwai':5 'march':1 'river':4 'the':3
                                   'search_artist'  'miller':2 'mitch':1
                                  'search_release'  'columbia':3 'columbialegacy':5 'greatest':1 'hits':2 'legacy':4
                                     'search_rest'  '00oldiepop':5 '161':8 '1958':6 '58':7 'and':12 'chorus':13 'country':4 'exotica':2 'his':9 'jazz':1 'oldies':3 'orch':10,11 'prerock':14 'unsorted':15
                                    'search_combo'  '00oldiepop':20 '161':23 '1958':21 '58':22 'and':6A,27 'bogey':8A 'chorus':28 'colonel':7A 'columbia':13C 'columbialegacy':15C 'country':19 'exotica':17 'from':2A 'greatest':11C 'his':24 'hits':12C 'jazz':16 'kwai':5A 'legacy':14C 'march':1A 'miller':10B 'mitch':9B 'oldies':18 'orch':25,26 'prerock':29 'river':4A 'the':3A 'unsorted':30
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'soundtrack', 'oldies', 'easy listening']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698349.1861205  (2021-05-22 17:45:49)
                             'size'  5826446