======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '144'
                                          'artist'  'Robert & Bobby'
                                     'text_people'  ''
                                         'release'  'Dynamite R&B Duos - Vol. 01'
                                           'title'  'Once Upon A Time'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-vocals-4', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '17'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rhythmblues'
                                             'bpm'  '129.813'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Dynamite R&B Duos - Vol. 01'
'TBPM' (BPM (beats per minute))                     '129.813'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rhythmblues'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Once Upon A Time'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Robert & Bobby'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '17'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.85 dB'
'TXXX:replaygain_track_peak'                        '0.518579'

========================== row from database ==========================
                                              'id'  947410
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/va - Dynamite R&B Duos - Vol. 01/17 - Robert & Bobby - Once Upon A Time.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  144
                                           'genre'  rock-pop-early-rhythmblues
                                        'filesize'  3471497
                                           'mtime'  1620736383
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country va 17 rock pop early rhythmblues
                                      'tag_artist'  Robert & Bobby
                                     'tag_release'  Dynamite R&B Duos - Vol. 01
                                       'tag_title'  Once Upon A Time
                                             'bpm'  129.813
                                    'search_title'  'a':3 'once':1 'time':4 'upon':2
                                   'search_artist'  'bobby':2 'robert':1
                                  'search_release'  'b':3 'duos':5 'dynamite':1 'r':2 'rb':4 'vol':6,7
                                     'search_rest'  'country':4 'early':8 'exotica':2 'jazz':1 'oldies':3 'pop':7 'rhythmblues':9 'rock':6 'va':5
                                    'search_combo'  'a':3A 'b':9C 'bobby':6B 'country':17 'duos':11C 'dynamite':7C 'early':21 'exotica':15 'jazz':14 'oldies':16 'once':1A 'pop':20 'r':8C 'rb':10C 'rhythmblues':22 'robert':5B 'rock':19 'time':4A 'upon':2A 'va':18 'vol':12C,13C
                                    'tag_tracknum'  17
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736382.759464  (2021-05-11 14:33:02)
                             'size'  3471497