======================== unified (from filesystem) ========================
                                         'bitrate'  '163.846'
                                        'duration'  '182'
                                          'artist'  "Guns N' Roses"
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  'Live and Let Die'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-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-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', '80s', 'hard rock', 'metal', 'rock']"
                                     'discogstags'  "['rock', 'hard rock', 'glam']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '136.828'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '136.828'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Live and Let Die'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               "Guns N' Roses"
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'hard rock', 'glam']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'hard rock', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.01 dB'
'TXXX:replaygain_track_peak'                        '0.476141'

========================== row from database ==========================
                                              'id'  1524271
                                            'path'  /data/Music/Bulk/00poprockelectronic/album top 1000/0229 Guns N_ Roses - Greatest hits/Greatest Hits-10-Live and Let Die.mp3
                                         'working'  None
                                         'bitrate'  163
                                    'duration_sec'  182
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  3735186
                                           'mtime'  1620573553
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic album top 1000 0229 N_ hits 10 electronic generic or radio unsorted
                                      'tag_artist'  Guns N' Roses
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Live and Let Die
                                             'bpm'  136.828
                                    'search_title'  'and':2 'die':4 'let':3 'live':1
                                   'search_artist'  'guns':1 'n':2,3 'roses':4
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 '0229':5 '1000':4 'album':2 'electronic':8 'generic':9 'hits':7 'n':6 'or':10 'radio':11 'top':3 'unsorted':12
                                    'search_combo'  '00poprockelectronic':11 '0229':15 '1000':14 'album':12 'and':2A 'die':4A 'electronic':18 'generic':19 'greatest':9C 'guns':5B 'hits':10C,17 'let':3A 'live':1A 'n':6B,7B,16 'or':20 'radio':21 'roses':8B 'top':13 'unsorted':22
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-3', 'q-syn-2', 'q-chart-3', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'hard rock', 'metal', 'rock']
                                        'tag_date'  2004
                                     'discogstags'  ['rock', 'hard rock', 'glam']

============================== file details ==============================
                                           'mtime'  1620573552.6117332  (2021-05-09 17:19:12)
                             'size'  3735186