======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '400'
                                          'artist'  'Simple minds'
                                     'text_people'  ''
                                         'release'  'top100'
                                           'title'  'Belfast child'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['80s', 'new wave', 'alternative', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '117.466'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'top100'
'TBPM' (BPM (beats per minute))                     '117.466'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Belfast child'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Simple minds'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '111,186'
'TXXX:Mp3gain_undo'                                 '+002,+002,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '075'
'TXXX:lastfmtags'                                   ['80s', 'new wave', 'alternative', 'pop', 'rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.55 dB'
'TXXX:replaygain_track_peak'                        '0.662636'

========================== row from database ==========================
                                              'id'  1407358
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/top100/075-Simple_minds-Belfast_child.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  400
                                           'genre'  rock-pop
                                        'filesize'  6410633
                                           'mtime'  1622802054
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 075 Simple_minds Belfast_child rock pop
                                      'tag_artist'  Simple minds
                                     'tag_release'  top100
                                       'tag_title'  Belfast child
                                             'bpm'  117.466
                                    'search_title'  'belfast':1 'child':2
                                   'search_artist'  'minds':2 'simple':1
                                  'search_release'  'top100':1
                                     'search_rest'  '00poprockelectronic':1 'belfast':7 'child':8 'dance':3 'generic':2 'minds':6 'pop':10 'rock':9 'simple':5 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':6 'belfast':1A,12 'child':2A,13 'dance':8 'generic':7 'minds':4B,11 'pop':15 'rock':14 'simple':3B,10 'top100':5C 'trapbeat':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'new wave', 'alternative', 'pop', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622802054.175279  (2021-06-04 12:20:54)
                             'size'  6410633