======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '194'
                                          'artist'  'They Might Be Giants'
                                     'text_people'  ''
                                         'release'  'The Flood Show'
                                           'title'  'Lucky Ball and Chain'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['quirky', 'alternative', 'rock', 'pop', 'happy']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-nerd'
                                             'bpm'  '107.3'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153, count=0)
'TALB' (Album/Movie/Show title)                     'The Flood Show'
'TBPM' (BPM (beats per minute))                     '107.3'
'TCON' (Content type, a.k.a. Genre)                 'rock-nerd'
'TIT2' (Title/songname/content description)         'Lucky Ball and Chain'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'They Might Be Giants'
'TRCK' (Track number/Position in set)               '2'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['quirky', 'alternative', 'rock', 'pop', 'happy']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.50 dB'
'TXXX:replaygain_track_peak'                        '0.885341'

========================== row from database ==========================
                                              'id'  1462418
                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/They Might Be Giants/MBZ;#They Might Be Giants;#The Flood Show;#02;#Lucky Ball and Chain.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  194
                                           'genre'  rock-nerd
                                        'filesize'  3114355
                                           'mtime'  1621786447
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic poprock indierock MBZ;#They Giants;#The Show;#02;#Lucky rock nerd
                                      'tag_artist'  They Might Be Giants
                                     'tag_release'  The Flood Show
                                       'tag_title'  Lucky Ball and Chain
                                             'bpm'  107.3
                                    'search_title'  'and':3 'ball':2 'chain':4 'lucky':1
                                   'search_artist'  'be':3 'giants':4 'might':2 'they':1
                                  'search_release'  'flood':2 'show':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 '02':13,16 'giants':8,10 'indierock':3 'lucky':14,17 'mbz':4,6 'nerd':19 'poprock':2 'rock':18 'show':12,15 'the':9,11 'they':5,7
                                    'search_combo'  '00poprockelectronic':12 '02':24,27 'and':3A 'ball':2A 'be':7B 'chain':4A 'flood':10C 'giants':8B,19,21 'indierock':14 'lucky':1A,25,28 'mbz':15,17 'might':6B 'nerd':30 'poprock':13 'rock':29 'show':11C,23,26 'the':9C,20,22 'they':5B,16,18
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['quirky', 'alternative', 'rock', 'pop', 'happy']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621786447.2215724  (2021-05-23 18:14:07)
                             'size'  3114355