======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '143'
                                          'artist'  'J. Nuncira Machado Y Su Orquesta'
                                     'text_people'  ''
                                         'release'  'La Maya Y Otros 15 Exitos Para Su Fiesta'
                                           'title'  'O A'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-style-latin'
                                             'bpm'  '106.869'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'La Maya Y Otros 15 Exitos Para Su Fiesta'
'TBPM' (BPM (beats per minute))                     '106.869'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-latin'
'TIT2' (Title/songname/content description)         'O A'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'J. Nuncira Machado Y Su Orquesta'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '10'
'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:q-bass'                                       '2'
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.41 dB'
'TXXX:replaygain_track_peak'                        '0.501746'

========================== row from database ==========================
                                              'id'  761815
                                            'path'  /data/Music/Bulk/00localcharacter/La Maya y otros 15 exitos para su fiesta/10 O A.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  143
                                           'genre'  loc-style-latin
                                        'filesize'  2295620
                                           'mtime'  1620592679
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter otros exitos para su fiesta 10 loc style latin
                                      'tag_artist'  J. Nuncira Machado Y Su Orquesta
                                     'tag_release'  La Maya Y Otros 15 Exitos Para Su Fiesta
                                       'tag_title'  O A
                                             'bpm'  106.869
                                    'search_title'  'a':2 'o':1
                                   'search_artist'  'j':1,2 'machado':4 'nuncira':3 'orquesta':7 'su':6 'y':5
                                  'search_release'  'exitos':5 'fiesta':8 'la':1 'maya':2 'otros':4 'para':6 'su':7 'y':3
                                     'search_rest'  'exitos':2 'fiesta':5 'latin':8 'loc':6 'otros':1 'para':3 'style':7 'su':4
                                    'search_combo'  'a':2A 'exitos':14C,19 'fiesta':17C,22 'j':3B,4B 'la':10C 'latin':25 'loc':23 'machado':6B 'maya':11C 'nuncira':5B 'o':1A 'orquesta':9B 'otros':13C,18 'para':15C,20 'style':24 'su':8B,16C,21 'y':7B,12C
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592679.3234081  (2021-05-09 22:37:59)
                             'size'  2295620