======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '159'
                                          'artist'  'Cecilia'
                                     'text_people'  'Cecilia'
                                         'release'  'Un ramito de violetas'
                                           'title'  'Mi querida Espaqa'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'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'  '1'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'loc-eur-spain'
                                             'bpm'  '84.245'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:³\x0e\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xb3\x0e\x00\x00')
'PRIV:PeakValue:Õb\x00\x00'                         PRIV(owner='PeakValue', data=b'\xd5b\x00\x00')
'TALB' (Album/Movie/Show title)                     'Un ramito de violetas'
'TBPM' (BPM (beats per minute))                     '84.245'
'TCOM' (Composer)                                   'Cecilia'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-spain'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Mi querida Espaqa'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cecilia'
'TPE2' (Band/orchestra/accompaniment)               'Cecilia'
'TRCK' (Track number/Position in set)               '1'
'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'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.68 dB'
'TXXX:replaygain_track_peak'                        '0.649296'

========================== row from database ==========================
                                              'id'  1393728
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/cecilia [esp 1975] un ramito de violetas/01-mi querida españa.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  159
                                           'genre'  loc-eur-spain
                                        'filesize'  3824290
                                           'mtime'  1621629578
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe cecilia [esp 1975] un 01 españa loc eur spain
                                      'tag_artist'  Cecilia
                                     'tag_release'  Un ramito de violetas
                                       'tag_title'  Mi querida Espaqa
                                             'bpm'  84.245
                                    'search_title'  'espaqa':3 'mi':1 'querida':2
                                   '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 'espana':10,11 'eur':13 'europe':3 'loc':12 'north':2 'spain':14 'un':9
                                    'search_combo'  '00mid':9 '1975':15,16 'cecilia':4B,12 'de':7C 'esp':13,14 'espana':18,19 'espaqa':3A 'eur':21 'europe':11 'loc':20 'mi':1A 'north':10 'querida':2A 'ramito':6C 'spain':22 'un':5C,17 'violetas':8C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['chile', 'female vocalists', '70s', 'protesta', 'spanish']
                                        'tag_date'  1975
                                     'discogstags'  ['rnb/swing', 'uk garage', 'electronic', 'hip hop']

============================== file details ==============================
                                           'mtime'  1621629578.4187675  (2021-05-21 22:39:38)
                             'size'  3824290