======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '142'
                                          'artist'  'Astrud Gilberto'
                                     'text_people'  ''
                                         'release'  'Verve Jazz Masters 9'
                                           'title'  'Berimbau'
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                                      'lastfmtags'  "['bossa nova', 'fip', 'latin', 'jazz', 'female vocalists', 'brazilian']"
                                     'discogstags'  "['jazz', 'bossa nova', 'easy listening']"
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  '16'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '88.709'
                                             'key'  '4A'
                                        'acoustid'  '2de59266-03c1-47b4-a57f-e75d88bfaa2f'
rest: ''

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'TBPM' (BPM (beats per minute))                     '88.709'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993-11-08'
'TIT2' (Title/songname/content description)         'Berimbau'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Astrud Gilberto'
'TPE2' (Band/orchestra/accompaniment)               'Astrud Gilberto'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Verve'
'TRCK' (Track number/Position in set)               '16/16'
'TSO2'                                              'Gilberto, Astrud'
'TSOP' (Performer sort order)                       'Gilberto, Astrud'
'TSRC' (ISRC (international standard recording code))  'USPR39400280'
'TXXX:ASIN'                                         'B0000046RI'
'TXXX:Acoustid Id'                                  '2de59266-03c1-47b4-a57f-e75d88bfaa2f'
'TXXX:BARCODE'                                      '0731451982422'
'TXXX:CATALOGNUMBER'                                '519 824-2'
'TXXX:MusicBrainz Album Artist Id'                  '8d08cabf-03a3-4f38-a815-8197a0984f19'
'TXXX:MusicBrainz Album Id'                         '7df0bd69-be2b-3009-b433-bff6de66493a'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '8d08cabf-03a3-4f38-a815-8197a0984f19'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['jazz', 'bossa nova', 'easy listening']
'TXXX:lastfmtags'                                   ['bossa nova', 'fip', 'latin', 'jazz', 'female vocalists', 'brazilian']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'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'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.18 dB'
'TXXX:replaygain_track_peak'                        '0.583495'
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========================== row from database ==========================
                                              'id'  973724
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Gilberto, Astrud - Verve Jazz Masters 09 (1965)/16 Berimbau.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  142
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3421415
                                           'mtime'  1620529672
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Gilberto, 09 (1965) 16 prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Astrud Gilberto
                                     'tag_release'  Verve Jazz Masters 9
                                       'tag_title'  Berimbau
                                             'bpm'  88.709
                                    'search_title'  'berimbau':1
                                   'search_artist'  'astrud':1 'gilberto':2
                                  'search_release'  '9':4 'jazz':2 'masters':3 'verve':1
                                     'search_rest'  '1965':7,8 'bossa':13 'country':4 'exotica':2 'gilberto':5,6 'jazz':1 'jb':10 'lounge':11 'oldies':3 'or':12 'prerock':9
                                    'search_combo'  '1965':14,15 '9':7C 'astrud':2B 'berimbau':1A 'bossa':20 'country':11 'exotica':9 'gilberto':3B,12,13 'jazz':5C,8 'jb':17 'lounge':18 'masters':6C 'oldies':10 'or':19 'prerock':16 'verve':4C
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['bossa nova', 'fip', 'latin', 'jazz', 'female vocalists', 'brazilian']
                                        'tag_date'  1993
                                     'discogstags'  ['jazz', 'bossa nova', 'easy listening']

============================== file details ==============================
                                           'mtime'  1620529672.2873225  (2021-05-09 05:07:52)
                             'size'  3421415