======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '134'
                                          'artist'  'Esquivel'
                                     'text_people'  ''
                                         'release'  'Cabaret Manana'
                                           'title'  'Johnson Rag'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['lounge', 'space age pop', 'exotica', 'latin', 'easy listening']"
                                     'discogstags'  "['space-age', 'jazz', 'latin jazz', 'latin', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '136.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Cabaret Manana'
'TBPM' (BPM (beats per minute))                     '136.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Johnson Rag'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '134269'
'TPE1' (Lead performer(s)/Soloist(s))               'Esquivel'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['space-age', 'jazz', 'latin jazz', 'latin', 'easy listening']
'TXXX:lastfmtags'                                   ['lounge', 'space age pop', 'exotica', 'latin', 'easy listening']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.97 dB'
'TXXX:replaygain_track_peak'                        '0.384066'

========================== row from database ==========================
                                              'id'  746270
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/va - space age pop & mid century domestics (jingles & themes)/(1960) esquivel - johnson rag.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  134
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3234762
                                           'mtime'  1620539374
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm va space age pop & mid century domestics (jingles & themes) (1960) esquivel johnson rag prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Esquivel
                                     'tag_release'  Cabaret Manana
                                       'tag_title'  Johnson Rag
                                             'bpm'  136.3
                                    'search_title'  'johnson':1 'rag':2
                                   'search_artist'  'esquivel':1
                                  'search_release'  'cabaret':1 'manana':2
                                     'search_rest'  '1960':12,13 'age':3 'bossa':23 'century':6 'domestics':7 'esquivel':14 'exotica':22 'jazz':19 'jb':18 'jingles':8,9 'johnson':15 'lounge':20 'mid':5 'or':21 'pop':4 'prerock':17 'rag':16 'space':2 'themes':10,11 'va':1
                                    'search_combo'  '1960':17,18 'age':8 'bossa':28 'cabaret':4C 'century':11 'domestics':12 'esquivel':3B,19 'exotica':27 'jazz':24 'jb':23 'jingles':13,14 'johnson':1A,20 'lounge':25 'manana':5C 'mid':10 'or':26 'pop':9 'prerock':22 'rag':2A,21 'space':7 'themes':15,16 'va':6
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  8A
                                           '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-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['lounge', 'space age pop', 'exotica', 'latin', 'easy listening']
                                        'tag_date'  1960
                                     'discogstags'  ['space-age', 'jazz', 'latin jazz', 'latin', 'easy listening']

============================== file details ==============================
                                           'mtime'  1620539373.7385197  (2021-05-09 07:49:33)
                             'size'  3234762