======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '171'
                                          'artist'  'Calixto Ochoa'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'El Ascendor'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['cumbia', 'latin', 'dead', 'colombia', 'world']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'loc-samerica'
                                             'bpm'  '131.669'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '131.669'
'TCON' (Content type, a.k.a. Genre)                 'loc-samerica'
'TDRC' (Recording time)                             '2015'
'TENC' (Encoded by)                                 'Free Mp3 Wma Converter'
'TIT2' (Title/songname/content description)         'El Ascendor'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Calixto Ochoa'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['cumbia', 'latin', 'dead', 'colombia', 'world']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.20 dB'
'TXXX:replaygain_track_peak'                        '0.375592'

========================== row from database ==========================
                                              'id'  793929
                                            'path'  /data/Music/Bulk/00localcharacter/CALIXTO OCHOA - ^1999^20 grandes exitos/17 - El ascensor.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  171
                                           'genre'  loc-samerica
                                        'filesize'  5478917
                                           'mtime'  1620530601
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter CALIXTO OCHOA ^1999^20 grandes exitos 17 ascensor loc samerica
                                      'tag_artist'  Calixto Ochoa
                                     'tag_release'  None
                                       'tag_title'  El Ascendor
                                             'bpm'  131.669
                                    'search_title'  'ascendor':2 'el':1
                                   'search_artist'  'calixto':1 'ochoa':2
                                  'search_release'  
                                     'search_rest'  '1999':3 '20':4 'ascensor':7 'calixto':1 'exitos':6 'grandes':5 'loc':8 'ochoa':2 'samerica':9
                                    'search_combo'  '1999':7 '20':8 'ascendor':2A 'ascensor':11 'calixto':3B,5 'el':1A 'exitos':10 'grandes':9 'loc':12 'ochoa':4B,6 'samerica':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['cumbia', 'latin', 'dead', 'colombia', 'world']
                                        'tag_date'  2015
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620530600.6115422  (2021-05-09 05:23:20)
                             'size'  5478917