======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '173'
                                          'artist'  'Robert Wilkins'
                                     'text_people'  ''
                                         'release'  'DOCD 5014 - Memphis Blues (1928-1935)'
                                           'title'  "Old Jim Canan's"
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['memphis blues', 'blues', 'delta blues', 'folk', 'old blues']"
                                     'discogstags'  "['blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  '22'
                                            'date'  '1930'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '122.363'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'DOCD 5014 - Memphis Blues (1928-1935)'
'TBPM' (BPM (beats per minute))                     '122.363'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-blues', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1930'
'TIT2' (Title/songname/content description)         "Old Jim Canan's"
'TKEY' (Initial key)                                '11B'
'TLEN' (Length)                                     '173270'
'TPE1' (Lead performer(s)/Soloist(s))               'Robert Wilkins'
'TRCK' (Track number/Position in set)               '16/22'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'blues'
'TXXX:lastfmtags'                                   ['memphis blues', 'blues', 'delta blues', 'folk', 'old blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.54 dB'
'TXXX:replaygain_track_peak'                        '0.575309'

========================== row from database ==========================
                                              'id'  1509300
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Wilkins, Robert - Memphis Blues 1928-1935/16 Old Jim Canan_s.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  173
                                           'genre'  prerock-jb-blues;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  2774912
                                           'mtime'  1620346120
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Wilkins, 16 Canan_s prerock jb blues;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Robert Wilkins
                                     'tag_release'  DOCD 5014 - Memphis Blues (1928-1935)
                                       'tag_title'  Old Jim Canan's
                                             'bpm'  122.363
                                    'search_title'  'canan':3 'canans':5 'jim':2 'old':1 's':4
                                   'search_artist'  'robert':1 'wilkins':2
                                  'search_release'  '1928':5 '19281935':7 '1935':6 '5014':2 'blues':4 'docd':1 'memphis':3
                                     'search_rest'  'blues':11,13 'canan':7 'country':4 'exotica':2 'jazz':1 'jb':10 'mor':20 'oldies':3 'pl':15 'prerock':9 's':8 'set':12,14,17,19 'shirleyspinoza':16,18 'wilkins':5,6
                                    'search_combo'  '1928':12C '19281935':14C '1935':13C '5014':9C 'blues':11C,25,27 'canan':3A,21 'canans':5A 'country':18 'docd':8C 'exotica':16 'jazz':15 'jb':24 'jim':2A 'memphis':10C 'mor':34 'old':1A 'oldies':17 'pl':29 'prerock':23 'robert':6B 's':4A,22 'set':26,28,31,33 'shirleyspinoza':30,32 'wilkins':7B,19,20
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['memphis blues', 'blues', 'delta blues', 'folk', 'old blues']
                                        'tag_date'  1930
                                     'discogstags'  ['blues']

============================== file details ==============================
                                           'mtime'  1620346120.19279  (2021-05-07 02:08:40)
                             'size'  2774912