======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '229'
                                          'artist'  'Deep Purple'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Smoke On The Water'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '50'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;eid-metal;rock-cppex'
                                             'bpm'  '114.803'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1'
'TBPM' (BPM (beats per minute))                     '114.803'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted',
 'eid-metal',
 'rock-cppex',
 'rock-cppex']
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         'Smoke On The Water'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Deep Purple'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '50'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.74 dB'
'TXXX:replaygain_track_peak'                        '0.833982'

========================== row from database ==========================
                                              'id'  1322462
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1973/050 - Deep Purple - Smoke On The Water.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  229
                                           'genre'  electronic-generic or radio-unsorted;eid-metal;rock-cppex
                                        'filesize'  4602830
                                           'mtime'  1620737095
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1973 050 electronic generic or radio unsorted;eid metal;rock cppex
                                      'tag_artist'  Deep Purple
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Smoke On The Water
                                             'bpm'  114.803
                                    'search_title'  'on':2 'smoke':1 'the':3 'water':4
                                   'search_artist'  'deep':1 'purple':2
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1973':3 'cppex':16 'eid':9,11 'electronic':4 'generic':5 'metal':12,14 'or':6 'radio':7 'rock':13,15 'top100':2 'unsorted':8,10
                                    'search_combo'  '00poprockelectronic':13 '1':12C '1973':15 'billboard':7C 'cppex':28 'deep':5B 'eid':21,23 'electronic':16 'generic':17 'metal':24,26 'of':11C 'on':2A 'or':18 'pop':9C 'purple':6B 'radio':19 'rock':25,27 'singles':10C 'smoke':1A 'the':3A 'top':8C 'top100':14 'unsorted':20,22 'water':4A
                                    'tag_tracknum'  50
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['heavy metal', 'rock', 'hard rock', 'progressive rock', 'classic rock']
                                        'tag_date'  1973
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737094.7773492  (2021-05-11 14:44:54)
                             'size'  4602830