======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '174'
                                          'artist'  'Yo-Yo Ma with The Amsterdam Baroque Orchestra & Ton Koopman'
                                     'text_people'  'Antonio Vivaldi'
                                         'release'  "Vivaldi's Cello"
                                           'title'  "Concerto for Viola d'Amore, Lute and Orchestra, RV 540: La Gloria ..."
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '127.4'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     "Vivaldi's Cello"
'TBPM' (BPM (beats per minute))                     '127.4'
'TCOM' (Composer)                                   'Antonio Vivaldi'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         "Concerto for Viola d'Amore, Lute and Orchestra, RV 540: La Gloria ..."
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '174706'
'TPE1' (Lead performer(s)/Soloist(s))               'Yo-Yo Ma'
'TPE2' (Band/orchestra/accompaniment)               'Yo-Yo Ma with The Amsterdam Baroque Orchestra & Ton Koopman'
'TPUB' (Publisher)                                  'Sony Classical'
'TRCK' (Track number/Position in set)               '12'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.47 dB'
'TXXX:replaygain_track_peak'                        '0.867046'

========================== row from database ==========================
                                              'id'  1532848
                                            'path'  /data/Music/Bulk/00instruments-classical/Yo-Yo Ma/Yo-Yo Ma with The Amsterdam Baroque Orchestra & Ton Koopman/Vivaldi_s Cello/12 Concerto for Viola d_Amore, Lute and Orchestra, RV 540_ La Gloria ....mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  174
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  7046454
                                           'mtime'  1620561913
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Vivaldi_s 12 d_Amore, 540_ prerock classical classical instruments
                                      'tag_artist'  Yo-Yo Ma with The Amsterdam Baroque Orchestra & Ton Koopman
                                     'tag_release'  Vivaldi's Cello
                                       'tag_title'  Concerto for Viola d'Amore, Lute and Orchestra, RV 540: La Gloria ...
                                             'bpm'  127.4
                                    'search_title'  '540':12,13 'amore':5 'and':8 'concerto':1 'd':4 'damore':6 'for':2 'gloria':15 'la':14 'lute':7 'orchestra':9,10 'rv':11 'viola':3
                                   'search_artist'  'amsterdam':7 'baroque':8 'koopman':11 'ma':4 'orchestra':9 'the':6 'ton':10 'with':5 'yo':1,2 'yoyo':3
                                  'search_release'  'cello':4 's':2 'vivaldi':1 'vivaldis':3
                                     'search_rest'  '00instruments':1 '540':9 'amore':6,8 'classical':2 'd':5,7 'instruments':11 'prerock':10 's':4 'vivaldi':3
                                    'search_combo'  '00instruments':31 '540':12A,13A,39 'amore':5A,36,38 'amsterdam':22B 'and':8A 'baroque':23B 'cello':30C 'classical':32 'concerto':1A 'd':4A,35,37 'damore':6A 'for':2A 'gloria':15A 'instruments':41 'koopman':26B 'la':14A 'lute':7A 'ma':19B 'orchestra':9A,10A,24B 'prerock':40 'rv':11A 's':28C,34 'the':21B 'ton':25B 'viola':3A 'vivaldi':27C,33 'vivaldis':29C 'with':20B 'yo':16B,17B 'yoyo':18B
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561912.5574825  (2021-05-09 14:05:12)
                             'size'  7046454