======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '537'
                                          'artist'  "Guns N' Roses"
                                     'text_people'  ''
                                         'release'  '100 Greatest Rock Songs Of The 90s'
                                           'title'  'November Rain'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', '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'  '31'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'rock-pop;set-pl-billboard'
                                             'bpm'  '139.658'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100 Greatest Rock Songs Of The 90s'
'TBPM' (BPM (beats per minute))                     '139.658'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop', 'set-pl-billboard']
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'November Rain'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               "Guns N' Roses"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '31'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'hard rock', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.12 dB'
'TXXX:replaygain_track_peak'                        '0.512531'

========================== row from database ==========================
                                              'id'  1499653
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/31-Guns_N__Roses-November_Rain.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  537
                                           'genre'  rock-pop;set-pl-billboard
                                        'filesize'  12893420
                                           'mtime'  1620389178
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 31 Guns_N__Roses November_Rain rock pop;set pl billboard
                                      'tag_artist'  Guns N' Roses
                                     'tag_release'  100 Greatest Rock Songs Of The 90s
                                       'tag_title'  November Rain
                                             'bpm'  139.658
                                    'search_title'  'november':1 'rain':2
                                   'search_artist'  'guns':1 'n':2,3 'roses':4
                                  'search_release'  '100':1 '90s':7 'greatest':2 'of':5 'rock':3 'songs':4 'the':6
                                     'search_rest'  '00poprockelectronic':1 '31':2 'billboard':14 'guns':3 'n':4 'november':6 'pl':13 'pop':9,11 'rain':7 'rock':8 'roses':5 'set':10,12
                                    'search_combo'  '00poprockelectronic':14 '100':7C '31':15 '90s':13C 'billboard':27 'greatest':8C 'guns':3B,16 'n':4B,5B,17 'november':1A,19 'of':11C 'pl':26 'pop':22,24 'rain':2A,20 'rock':9C,21 'roses':6B,18 'set':23,25 'songs':10C 'the':12C
                                    'tag_tracknum'  31
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'hard rock', 'metal', 'rock']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389178.0911505  (2021-05-07 14:06:18)
                             'size'  12893420