======================== unified (from filesystem) ========================
                                         'bitrate'  '249.761'
                                        'duration'  '269'
                                          'artist'  'The Toasters'
                                     'text_people'  ''
                                         'release'  'Live in London'
                                           'title'  'Decision of midnight'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-OLDST-2', 'Q-HHRNBTT-2', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['ska punk', 'two tone', 'third wave ska', 'ska', 'reggae']"
                                     'discogstags'  "['ska']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-unsorted'
                                             'bpm'  '134.7'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Live in London'
'TBPM' (BPM (beats per minute))                     '134.7'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-unsorted'
'TIT2' (Title/songname/content description)         'Decision of midnight'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Toasters'
'TRCK' (Track number/Position in set)               '20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'ska'
'TXXX:lastfmtags'                                   ['ska punk', 'two tone', 'third wave ska', 'ska', 'reggae']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.28 dB'
'TXXX:replaygain_track_peak'                        '0.465171'

========================== row from database ==========================
                                              'id'  1298751
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Toasters/Live in London/cd2/20 - The Toasters - Decision of midnight.mp3
                                         'working'  None
                                         'bitrate'  249
                                    'duration_sec'  269
                                           'genre'  loc-style-reggae or dub or ska or dancehall-unsorted
                                        'filesize'  8429568
                                           'mtime'  1620524943
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic cd2 20 loc style reggae or dub or ska or dancehall unsorted
                                      'tag_artist'  The Toasters
                                     'tag_release'  Live in London
                                       'tag_title'  Decision of midnight
                                             'bpm'  134.7
                                    'search_title'  'decision':1 'midnight':3 'of':2
                                   'search_artist'  'the':1 'toasters':2
                                  'search_release'  'in':2 'live':1 'london':3
                                     'search_rest'  '00poprockelectronic':1 '20':3 'cd2':2 'dancehall':10 'dub':8 'loc':4 'or':7 'reggae':6 'ska':9 'style':5 'unsorted':11
                                    'search_combo'  '00poprockelectronic':9 '20':11 'cd2':10 'dancehall':18 'decision':1A 'dub':16 'in':7C 'live':6C 'loc':12 'london':8C 'midnight':3A 'of':2A 'or':15 'reggae':14 'ska':17 'style':13 'the':4B 'toasters':5B 'unsorted':19
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['ska punk', 'two tone', 'third wave ska', 'ska', 'reggae']
                                        'tag_date'  
                                     'discogstags'  ['ska']

============================== file details ==============================
                                           'mtime'  1620524943.1952372  (2021-05-09 03:49:03)
                             'size'  8429568