======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '139'
                                          'artist'  'Hermanos Carreon'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Rosas rojas para una dama triste'
                                           'quals'  ("['Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'q-syn-2', "
 "'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', 'q-drums-2', "
 "'q-other-4', 'q-piano-1', 'q-vocals-1', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['mexico', 'mexican', 'rock nena linda']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '88.865'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '88.865'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-mor']
'TIT2' (Title/songname/content description)         'Rosas rojas para una dama triste'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hermanos Carreon'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['mexico', 'mexican', 'rock nena linda']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.89 dB'
'TXXX:replaygain_track_peak'                        '0.701396'

========================== row from database ==========================
                                              'id'  949312
                                            'path'  /data/Music/Bulk/sns/Hermanos Carreon - rosas rojas para una dama triste.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  139
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  3343910
                                           'mtime'  1621474627
                                   'redo_metaread'  0
                                        'rest_str'   sns rosas set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Hermanos Carreon
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Rosas rojas para una dama triste
                                             'bpm'  88.865
                                    'search_title'  'dama':5 'para':3 'rojas':2 'rosas':1 'triste':6 'una':4
                                   'search_artist'  'carreon':2 'hermanos':1
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'mor':9 'pl':4 'rosas':2 'set':3,6,8 'shirleyspinoza':5,7 'sns':1
                                    'search_combo'  'carreon':8B 'dama':5A 'hermanos':7B 'mor':19 'para':3A 'pl':14 'rojas':2A 'rosas':1A,12 'set':13,16,18 'shirley':9C 'shirleyspinoza':15,17 'sns':11 'spinoza':10C 'triste':6A 'una':4A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-4', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['mexico', 'mexican', 'rock nena linda']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621474627.0440989  (2021-05-20 03:37:07)
                             'size'  3343910