======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '404'
                                          'artist'  "Guns N' Roses"
                                     'text_people'  ''
                                         'release'  'Hits of the 80s'
                                           'title'  'Paradise City'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'hard rock', 'metal', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard'
                                             'bpm'  '101.006'
                                             'key'  '2B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hits of the 80s'
'TBPM' (BPM (beats per minute))                     '101.006'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex', 'set-pl-billboard']
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Paradise City'
'TKEY' (Initial key)                                '2B'
'TPE1' (Lead performer(s)/Soloist(s))               "Guns N' Roses"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'hard rock', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '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'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.38 dB'
'TXXX:replaygain_track_peak'                        '0.417526'

========================== row from database ==========================
                                              'id'  1528031
                                            'path'  /data/Music/Bulk/00poprockelectronic/Hits Of The 80_s/Guns_n_Roses - Paradise City.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  404
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard
                                        'filesize'  6476244
                                           'mtime'  1620737204
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Of The 80_s Guns_n_Roses electronic generic or radio unsorted;rock cppex;set pl billboard
                                      'tag_artist'  Guns N' Roses
                                     'tag_release'  Hits of the 80s
                                       'tag_title'  Paradise City
                                             'bpm'  101.006
                                    'search_title'  'city':2 'paradise':1
                                   'search_artist'  'guns':1 'n':2,3 'roses':4
                                  'search_release'  '80s':4 'hits':1 'of':2 'the':3
                                     'search_rest'  '00poprockelectronic':1 '80':4 'billboard':22 'cppex':17,19 'electronic':9 'generic':10 'guns':6 'n':7 'of':2 'or':11 'pl':21 'radio':12 'rock':14,16 'roses':8 's':5 'set':18,20 'the':3 'unsorted':13,15
                                    'search_combo'  '00poprockelectronic':11 '80':14 '80s':10C 'billboard':32 'city':2A 'cppex':27,29 'electronic':19 'generic':20 'guns':3B,16 'hits':7C 'n':4B,5B,17 'of':8C,12 'or':21 'paradise':1A 'pl':31 'radio':22 'rock':24,26 'roses':6B,18 's':15 'set':28,30 'the':9C,13 'unsorted':23,25
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'hard rock', 'metal', 'rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737203.5625193  (2021-05-11 14:46:43)
                             'size'  6476244