======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '254'
                                          'artist'  'Cecilia'
                                     'text_people'  'Eva Sobredo'
                                         'release'  'Un ramito de violetas'
                                           'title'  'Un ramito de violetas'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chile', 'female vocalists', '70s', 'protesta', 'spanish']"
                                     'discogstags'  "['rnb/swing', 'uk garage', 'electronic', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'loc-eur-spain'
                                             'bpm'  '134.466'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:p\x0c\x00\x00'                   PRIV(owner='AverageLevel', data=b'p\x0c\x00\x00')
'PRIV:PeakValue:=^\x00\x00'                         PRIV(owner='PeakValue', data=b'=^\x00\x00')
'TALB' (Album/Movie/Show title)                     'Un ramito de violetas'
'TBPM' (BPM (beats per minute))                     '134.466'
'TCOM' (Composer)                                   'Eva Sobredo'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-spain'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Un ramito de violetas'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cecilia'
'TPE2' (Band/orchestra/accompaniment)               'Cecilia'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rnb/swing', 'uk garage', 'electronic', 'hip hop']
'TXXX:lastfmtags'                                   ['chile', 'female vocalists', '70s', 'protesta', 'spanish']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.13 dB'
'TXXX:replaygain_track_peak'                        '0.619135'

========================== row from database ==========================
                                              'id'  1396208
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/cecilia [esp 1975] un ramito de violetas/08-un ramito de violetas.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  254
                                           'genre'  loc-eur-spain
                                        'filesize'  6114241
                                           'mtime'  1621629578
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe cecilia [esp 1975] un 08 un loc eur spain
                                      'tag_artist'  Cecilia
                                     'tag_release'  Un ramito de violetas
                                       'tag_title'  Un ramito de violetas
                                             'bpm'  134.466
                                    'search_title'  'de':3 'ramito':2 'un':1 'violetas':4
                                   'search_artist'  'cecilia':1
                                  'search_release'  'de':3 'ramito':2 'un':1 'violetas':4
                                     'search_rest'  '00mid':1 '1975':7,8 'cecilia':4 'esp':5,6 'eur':11 'europe':3 'loc':10 'north':2 'spain':12 'un':9
                                    'search_combo'  '00mid':10 '1975':16,17 'cecilia':5B,13 'de':3A,8C 'esp':14,15 'eur':20 'europe':12 'loc':19 'north':11 'ramito':2A,7C 'spain':21 'un':1A,6C,18 'violetas':4A,9C
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['chile', 'female vocalists', '70s', 'protesta', 'spanish']
                                        'tag_date'  1975
                                     'discogstags'  ['rnb/swing', 'uk garage', 'electronic', 'hip hop']

============================== file details ==============================
                                           'mtime'  1621629578.4895623  (2021-05-21 22:39:38)
                             'size'  6114241