======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '68'
                                          'artist'  'They Might Be Giants'
                                     'text_people'  ''
                                         'release'  'Apollo 18'
                                           'title'  'Dig My Grave'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['quirky', 'alternative', 'rock', 'pop', 'happy']"
                                     'discogstags'  "['rock', 'alternative rock', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'rock-nerd'
                                             'bpm'  '121.8'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=128, count=0)
'TALB' (Album/Movie/Show title)                     'Apollo 18'
'TBPM' (BPM (beats per minute))                     '121.8'
'TCMP'                                              '0'
'TCON' (Content type, a.k.a. Genre)                 'rock-nerd'
'TDRC' (Recording time)                             '1992'
'TDRL' (Release time)                               '1992-03-24'
'TIT2' (Title/songname/content description)         'Dig My Grave'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'They Might Be Giants'
'TPE2' (Band/orchestra/accompaniment)               'They Might Be Giants'
'TRCK' (Track number/Position in set)               '1'
'TSOP' (Performer sort order)                       'They Might Be Giants'
'TXXX:FMPS_Rating'                                  '0.6'
'TXXX:MusicBrainz Album Artist'                     'They Might Be Giants'
'TXXX:MusicBrainz Album Artist Id'                  '183d6ef6-e161-47ff-9085-063c8b897e97'
'TXXX:MusicBrainz Album Artist Sortname'            'They Might Be Giants'
'TXXX:MusicBrainz Album Id'                         '46ffd6e9-7cb5-4645-b844-53e2311dc402'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '183d6ef6-e161-47ff-9085-063c8b897e97'
'TXXX:MusicBrainz Non-Album'                        '0'
'TXXX:MusicIP PUID'                                 '2a48d0c7-d5ad-1aa9-bc70-f79dcfcbd773'
'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:discogstags'                                  ['rock', 'alternative rock', 'pop rock']
'TXXX:lastfmtags'                                   ['quirky', 'alternative', 'rock', 'pop', 'happy']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.45 dB'
'TXXX:replaygain_track_peak'                        '0.572619'

========================== row from database ==========================
                                              'id'  1472502
                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/They Might Be Giants/MBZ;#They Might Be Giants;#Apollo 18;#01;#Dig My Grave.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  68
                                           'genre'  rock-nerd
                                        'filesize'  1102962
                                           'mtime'  1621786470
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic poprock indierock MBZ;#They Giants;#Apollo 18;#01;#Dig rock nerd
                                      'tag_artist'  They Might Be Giants
                                     'tag_release'  Apollo 18
                                       'tag_title'  Dig My Grave
                                             'bpm'  121.8
                                    'search_title'  'dig':1 'grave':3 'my':2
                                   'search_artist'  'be':3 'giants':4 'might':2 'they':1
                                  'search_release'  '18':2 'apollo':1
                                     'search_rest'  '00poprockelectronic':1 '01':13,16 '18':12,15 'apollo':9,11 'dig':14,17 'giants':8,10 'indierock':3 'mbz':4,6 'nerd':19 'poprock':2 'rock':18 'they':5,7
                                    'search_combo'  '00poprockelectronic':10 '01':22,25 '18':9C,21,24 'apollo':8C,18,20 'be':6B 'dig':1A,23,26 'giants':7B,17,19 'grave':3A 'indierock':12 'mbz':13,15 'might':5B 'my':2A 'nerd':28 'poprock':11 'rock':27 'they':4B,14,16
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['quirky', 'alternative', 'rock', 'pop', 'happy']
                                        'tag_date'  1992
                                     'discogstags'  ['rock', 'alternative rock', 'pop rock']

============================== file details ==============================
                                           'mtime'  1621786469.8881285  (2021-05-23 18:14:29)
                             'size'  1102962