======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '89'
                                          'artist'  'Percy Grainger'
                                     'text_people'  ''
                                         'release'  'Music from the Ether: Original Works for Theremin'
                                           'title'  'Free Music #1'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-2', "
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 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['classical', 'australian', 'piano', 'composers', '20th century classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '12'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'mi-theremin'
                                             'bpm'  '135.0'
                                             'key'  '5B'
                                        'acoustid'  '90597c1c-c4f9-4a19-8c26-8f2185d1c39c'
rest: ''

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

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'COMM:iTunes_CDDB_IDs:eng'                          '12+D463BD8B3E4866D3FED01BED9A766894+975688'
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'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'mi-theremin'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999'
'TENC' (Encoded by)                                 'iTunes v7.6.1'
'TIT2' (Title/songname/content description)         'Free Music #1'
'TKEY' (Initial key)                                '5B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Percy Grainger'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Mode'
'TRCK' (Track number/Position in set)               '4/12'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       'Grainger, Percy'
'TXXX:Acoustid Id'                                  '90597c1c-c4f9-4a19-8c26-8f2185d1c39c'
'TXXX:CATALOGNUMBER'                                'mode 76'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         'b7a37d0d-ac38-4373-95e4-99543a24e791'
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'TXXX:MusicBrainz Album Status'                     'official'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['classical', 'australian', 'piano', 'composers', '20th century classical']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.71 dB'
'TXXX:replaygain_track_peak'                        '0.799773'
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========================== row from database ==========================
                                              'id'  772532
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Music From The Ether_ Original Works For Theremin/04 Free Music # 1 for Four Theremins..mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  89
                                           'genre'  mi-theremin
                                        'filesize'  3589857
                                           'mtime'  1620527998
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm From Ether_ For 04 Four Theremins. theremin
                                      'tag_artist'  Percy Grainger
                                     'tag_release'  Music from the Ether: Original Works for Theremin
                                       'tag_title'  Free Music #1
                                             'bpm'  135.0
                                    'search_title'  '1':3,4 'free':1 'music':2
                                   'search_artist'  'grainger':2 'percy':1
                                  'search_release'  'ether':4,5 'for':8 'from':2 'music':1 'original':6 'the':3 'theremin':9 'works':7
                                     'search_rest'  'ether':2 'for':3 'four':4 'from':1 'theremin':7 'theremins':5,6
                                    'search_combo'  '1':3A,4A 'ether':10C,11C,17 'for':14C,18 'four':19 'free':1A 'from':8C,16 'grainger':6B 'music':2A,7C 'original':12C 'percy':5B 'the':9C 'theremin':15C,22 'theremins':20,21 'works':13C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical', 'australian', 'piano', 'composers', '20th century classical']
                                        'tag_date'  1999
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527998.021781  (2021-05-09 04:39:58)
                             'size'  3589857