======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '93'
                                          'artist'  'They Might Be Giants'
                                     'text_people'  ''
                                         'release'  'Then: The Earlier Years (disc 1)'
                                           'title'  'The Famous Polka'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['quirky', 'alternative', 'rock', 'pop', 'happy']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '22'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-nerd'
                                             'bpm'  '116.9'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153, count=0)
'TALB' (Album/Movie/Show title)                     'Then: The Earlier Years (disc 1)'
'TBPM' (BPM (beats per minute))                     '116.9'
'TCON' (Content type, a.k.a. Genre)                 'rock-nerd'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'The Famous Polka'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'They Might Be Giants'
'TPE2' (Band/orchestra/accompaniment)               'They Might Be Giants'
'TRCK' (Track number/Position in set)               '22'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MP3GAIN_MINMAX'                               '136,191'
'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'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.12 dB'
'TXXX:replaygain_track_peak'                        '0.419690'

========================== row from database ==========================
                                              'id'  1464533
                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/They Might Be Giants/MBZ;#They Might Be Giants;#Then The Earlier Years (disc 1);#22;#The Famous Polka.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  93
                                           'genre'  rock-nerd
                                        'filesize'  1500070
                                           'mtime'  1621786444
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic poprock indierock MBZ;#They Giants;#Then 1);#22;#The rock nerd
                                      'tag_artist'  They Might Be Giants
                                     'tag_release'  Then: The Earlier Years (disc 1)
                                       'tag_title'  The Famous Polka
                                             'bpm'  116.9
                                    'search_title'  'famous':2 'polka':3 'the':1
                                   'search_artist'  'be':3 'giants':4 'might':2 'they':1
                                  'search_release'  '1':8,9 'disc':6,7 'earlier':4 'the':3 'then':1,2 'years':5
                                     'search_rest'  '00poprockelectronic':1 '1':12,15 '22':13,16 'giants':8,10 'indierock':3 'mbz':4,6 'nerd':19 'poprock':2 'rock':18 'the':14,17 'then':9,11 'they':5,7
                                    'search_combo'  '00poprockelectronic':17 '1':15C,16C,28,31 '22':29,32 'be':6B 'disc':13C,14C 'earlier':11C 'famous':2A 'giants':7B,24,26 'indierock':19 'mbz':20,22 'might':5B 'nerd':35 'polka':3A 'poprock':18 'rock':34 'the':1A,10C,30,33 'then':8C,9C,25,27 'they':4B,21,23 'years':12C
                                    'tag_tracknum'  22
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['quirky', 'alternative', 'rock', 'pop', 'happy']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621786443.9274912  (2021-05-23 18:14:03)
                             'size'  1500070