======================== unified (from filesystem) ========================
                                         'bitrate'  '215.342'
                                        'duration'  '310'
                                          'artist'  'CAN'
                                     'text_people'  ''
                                         'release'  'Unlimited Edition'
                                           'title'  "I'm Too Leise"
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'krautrock', 'progressive rock', 'psychedelic', 'experimental']"
                                     'discogstags'  "['krautrock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '19'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'rock-cppex-experimental or noise'
                                             'bpm'  '112.7'
                                             'key'  '9A'
                                        'acoustid'  'b1ae7121-0589-4270-ada7-61801b9068fa'
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 0000004D 0000004D 000000BF 000000BF 0003868D 000386DB 00000000 00000000 '
 '0000E7BC 0000E7BC')
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000B38 0000000000D0B938 00000000 007F5BC7 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Unlimited Edition'
'TBPM' (BPM (beats per minute))                     '112.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-experimental or noise'
'TDOR' (Original release time)                      '1974'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         "I'm Too Leise"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'CAN'
'TPE2' (Band/orchestra/accompaniment)               'CAN'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/19'
'TSO2'                                              'Can'
'TSOP' (Performer sort order)                       'Can'
'TXXX:Acoustid Id'                                  'b1ae7121-0589-4270-ada7-61801b9068fa'
'TXXX:MusicBrainz Album Artist Id'                  '13501c7d-d181-45ba-af52-5f101d8516a0'
'TXXX:MusicBrainz Album Id'                         '60d2e047-0908-485a-a64e-f91c2d701444'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '13501c7d-d181-45ba-af52-5f101d8516a0'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['krautrock', 'rock']
'TXXX:lastfmtags'                                   ['german', 'krautrock', 'progressive rock', 'psychedelic', 'experimental']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.64 dB'
'TXXX:replaygain_track_peak'                        '0.541790'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'54d01d43-6094-4d06-b7fe-b18477451415')

========================== row from database ==========================
                                              'id'  1517340
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/CAN - Unlimited Edition/04 I_m Too Leise.mp3
                                         'working'  None
                                         'bitrate'  215
                                    'duration_sec'  310
                                           'genre'  rock-cppex-experimental or noise
                                        'filesize'  8362668
                                           'mtime'  1636918164
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 04 I_m rock cppex experimental or noise
                                      'tag_artist'  CAN
                                     'tag_release'  Unlimited Edition
                                       'tag_title'  I'm Too Leise
                                             'bpm'  112.7
                                    'search_title'  'i':1 'im':3 'leise':5 'm':2 'too':4
                                   'search_artist'  'can':1
                                  'search_release'  'edition':2 'unlimited':1
                                     'search_rest'  'classicprogpsy':1 'cppex':5 'experimental':6 'i':2 'm':3 'noise':8 'or':7 'rock':4
                                    'search_combo'  'can':6B 'classicprogpsy':9 'cppex':13 'edition':8C 'experimental':14 'i':1A,10 'im':3A 'leise':5A 'm':2A,11 'noise':16 'or':15 'rock':12 'too':4A 'unlimited':7C
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['german', 'krautrock', 'progressive rock', 'psychedelic', 'experimental']
                                        'tag_date'  2005
                                     'discogstags'  ['krautrock', 'rock']

============================== file details ==============================
                                           'mtime'  1636918164.378518  (2021-11-14 20:29:24)
                             'size'  8362668