======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '212'
                                          'artist'  'Dr. Horse'
                                     'text_people'  ''
                                         'release'  'Slow Grind Fever Vol. 7'
                                           'title'  'Jack, That Cat Was Clean'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'fire', 'fire records', '1962', 'cooper was here']"
                                     'discogstags'  "['rhythm & blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '143.721'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Slow Grind Fever Vol. 7'
'TBPM' (BPM (beats per minute))                     '143.721'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Jack, That Cat Was Clean'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dr. Horse'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rhythm & blues'
'TXXX:lastfmtags'                                   ['blues', 'fire', 'fire records', '1962', 'cooper was here']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.33 dB'
'TXXX:replaygain_track_peak'                        '0.662993'

========================== row from database ==========================
                                              'id'  947635
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/va - Slow Grind Fever Vol. 7/B5 - Dr. Horse - Jack, That Cat Was Clean.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  212
                                           'genre'  rock-pop-early
                                        'filesize'  8645144
                                           'mtime'  1620736718
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country va B5 rock pop early
                                      'tag_artist'  Dr. Horse
                                     'tag_release'  Slow Grind Fever Vol. 7
                                       'tag_title'  Jack, That Cat Was Clean
                                             'bpm'  143.721
                                    'search_title'  'cat':4 'clean':6 'jack':1,2 'that':3 'was':5
                                   'search_artist'  'dr':1,2 'horse':3
                                  'search_release'  '7':6 'fever':3 'grind':2 'slow':1 'vol':4,5
                                     'search_rest'  'b5':6 'country':4 'early':9 'exotica':2 'jazz':1 'oldies':3 'pop':8 'rock':7 'va':5
                                    'search_combo'  '7':15C 'b5':21 'cat':4A 'clean':6A 'country':19 'dr':7B,8B 'early':24 'exotica':17 'fever':12C 'grind':11C 'horse':9B 'jack':1A,2A 'jazz':16 'oldies':18 'pop':23 'rock':22 'slow':10C 'that':3A 'va':20 'vol':13C,14C 'was':5A
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'fire', 'fire records', '1962', 'cooper was here']
                                        'tag_date'  1955
                                     'discogstags'  ['rhythm & blues']

============================== file details ==============================
                                           'mtime'  1620736718.3917553  (2021-05-11 14:38:38)
                             'size'  8645144