======================== unified (from filesystem) ========================
                                         'bitrate'  '170.064'
                                        'duration'  '288'
                                          'artist'  'Los Toros Band'
                                     'text_people'  ''
                                         'release'  'Merengue'
                                           'title'  'A Pasito Lento'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['bachata', 'merengue', 'latin', 'spanish']"
                                     'discogstags'  "['latin']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '127.685'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Merengue'
'TBPM' (BPM (beats per minute))                     '127.685'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TIT2' (Title/songname/content description)         'A Pasito Lento'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Los Toros Band'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'latin'
'TXXX:lastfmtags'                                   ['bachata', 'merengue', 'latin', 'spanish']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.00 dB'
'TXXX:replaygain_track_peak'                        '0.502763'

========================== row from database ==========================
                                              'id'  778375
                                            'path'  /data/Music/Bulk/00localcharacter/Latin/Merengue/Los Toros Band - A Pasito Lento.mp3
                                         'working'  None
                                         'bitrate'  170
                                    'duration_sec'  288
                                           'genre'  loc-unsorted
                                        'filesize'  6142854
                                           'mtime'  1620401166
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Latin loc unsorted
                                      'tag_artist'  Los Toros Band
                                     'tag_release'  Merengue
                                       'tag_title'  A Pasito Lento
                                             'bpm'  127.685
                                    'search_title'  'a':1 'lento':3 'pasito':2
                                   'search_artist'  'band':3 'los':1 'toros':2
                                  'search_release'  'merengue':1
                                     'search_rest'  'latin':1 'loc':2 'unsorted':3
                                    'search_combo'  'a':1A 'band':6B 'latin':8 'lento':3A 'loc':9 'los':4B 'merengue':7C 'pasito':2A 'toros':5B 'unsorted':10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['bachata', 'merengue', 'latin', 'spanish']
                                        'tag_date'  
                                     'discogstags'  ['latin']

============================== file details ==============================
                                           'mtime'  1620401166.019196  (2021-05-07 17:26:06)
                             'size'  6142854