======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '188'
                                          'artist'  'The Clash'
                                     'text_people'  ''
                                         'release'  'Sounds of the 1980s (Super Clasicos)'
                                           'title'  'Should I Stay Or Should I Go'
                                           'quals'  ("['Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-UNU-1', "
 "'Q-CHART-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['punk rock', 'classic rock', 'punk', 'british', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio;rock-cppex;rock-gr-punk'
                                             'bpm'  '113.8'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sounds of the 1980s (Super Clasicos)'
'TBPM' (BPM (beats per minute))                     '113.8'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio', 'rock-cppex', 'rock-gr-punk']
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Should I Stay Or Should I Go'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Clash'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-CHART'                                      '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['punk rock', 'classic rock', 'punk', 'british', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.07 dB'
'TXXX:replaygain_track_peak'                        '0.679015'

========================== row from database ==========================
                                              'id'  1406504
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Level 42 - Sound of the 1980s (Super Clasicos) (002) (T)/171 - The Clash - Should I Stay Or Should I Go.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  188
                                           'genre'  electronic-generic or radio;rock-cppex;rock-gr-punk
                                        'filesize'  3010952
                                           'mtime'  1620736915
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat Level 42 (002) (T) 171 electronic generic or radio;rock cppex;rock gr punk
                                      'tag_artist'  The Clash
                                     'tag_release'  Sounds of the 1980s (Super Clasicos)
                                       'tag_title'  Should I Stay Or Should I Go
                                             'bpm'  113.8
                                    'search_title'  'go':5 'i':2 'or':4 'should':1 'stay':3
                                   'search_artist'  'clash':2 'the':1
                                  'search_release'  '1980s':4 'clasicos':7,8 'of':2 'sounds':1 'super':5,6 'the':3
                                     'search_rest'  '002':7,8 '00poprockelectronic':1 '171':11 '42':6 'cppex':18,20 'dance':3 'electronic':12 'generic':2 'gr':22 'level':5 'or':13 'punk':23 'radio':14,16 'rock':15,17,19,21 't':9,10 'trapbeat':4
                                    'search_combo'  '002':22,23 '00poprockelectronic':16 '171':26 '1980s':11C '42':21 'clash':7B 'clasicos':14C,15C 'cppex':33,35 'dance':18 'electronic':27 'generic':17 'go':5A 'gr':37 'i':2A 'level':20 'of':9C 'or':4A,28 'punk':38 'radio':29,31 'rock':30,32,34,36 'should':1A 'sounds':8C 'stay':3A 'super':12C,13C 't':24,25 'the':6B,10C 'trapbeat':19
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['punk rock', 'classic rock', 'punk', 'british', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736914.521107  (2021-05-11 14:41:54)
                             'size'  3010952