======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '460'
                                          'artist'  'Pet Shop Boys'
                                     'text_people'  ''
                                         'release'  'Introspective'
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 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
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                                      'tracktotal'  '6'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-we-disco or italo'
                                             'bpm'  '110'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '110'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-disco or italo'
'TDOR' (Original release time)                      '1988'
'TDRC' (Recording time)                             '2003-03-03'
'TIT2' (Title/songname/content description)         'Domino Dancing'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Pet Shop Boys'
'TPE2' (Band/orchestra/accompaniment)               'Pet Shop Boys'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'EMI'
'TRCK' (Track number/Position in set)               '3/6'
'TSO2'                                              'Pet Shop Boys'
'TSOP' (Performer sort order)                       'Pet Shop Boys'
'TSRC' (ISRC (international standard recording code))  'GBAYE0100047'
'TXXX:ASIN'                                         'B001J4XX5A'
'TXXX:Artists'                                      'Pet Shop Boys'
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'TXXX:MusicBrainz Album Id'                         'bded5abd-a821-4052-9cb0-11dec886d0fc'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'be540c02-7898-4b79-9acc-c8122c7d9e83'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'pop', 'house', 'synth-pop']
'TXXX:lastfmtags'                                   ['80s', 'new wave', 'electronic', 'pop', 'synthpop']
'TXXX:originalyear'                                 '1988'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.705198'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'db58b54d-b68f-49ac-a458-b8c7e7c7b2a6')

========================== row from database ==========================
                                              'id'  1420866
                                            'path'  /data/Music/Bulk/00poprockelectronic-waves-disco/00disco-italo/Pet Shop Boys/Introspective/03 Domino Dancing.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  460
                                           'genre'  electronic-we-disco or italo
                                        'filesize'  18420598
                                           'mtime'  1620610055
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic waves disco 00disco italo 03 electronic we disco or italo
                                      'tag_artist'  Pet Shop Boys
                                     'tag_release'  Introspective
                                       'tag_title'  Domino Dancing
                                             'bpm'  110.0
                                    'search_title'  'dancing':2 'domino':1
                                   'search_artist'  'boys':3 'pet':1 'shop':2
                                  'search_release'  'introspective':1
                                     'search_rest'  '00disco':4 '00poprockelectronic':1 'disco':3 'electronic':6 'italo':5 'or':8 'waves':2 'we':7
                                    'search_combo'  '00disco':10 '00poprockelectronic':7 'boys':5B 'dancing':2A 'disco':9 'domino':1A 'electronic':12 'introspective':6C 'italo':11 'or':14 'pet':3B 'shop':4B 'waves':8 'we':13
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-4', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'new wave', 'electronic', 'pop', 'synthpop']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic', 'pop', 'house', 'synth-pop']

============================== file details ==============================
                                           'mtime'  1620610055.1669433  (2021-05-10 03:27:35)
                             'size'  18420598