======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '304'
                                          'artist'  'Electric Light Orchestra'
                                     'text_people'  ''
                                         'release'  'Definitive Collection'
                                           'title'  'Mr. Blue Sky'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'progressive rock', 'british', '70s', 'classic rock']"
                                     'discogstags'  "['rock', 'prog rock', 'symphonic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '19'
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '89.493'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Cleaned by TuneUp!'
'COMM:ID3v1 Comment:XXX'                            'Cleaned by TuneUp!'
'COMM:iTunNORM:eng'                                 (' 0000092B 00000C2E 000073C5 00009ABF 00024FA7 0002305C 00008000 00008000 '
 '00028FDF 000077A3')
'TALB' (Album/Movie/Show title)                     'Definitive Collection'
'TBPM' (BPM (beats per minute))                     '89.493'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Mr. Blue Sky'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Electric Light Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Electric Light Orchestra'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '11/19'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'prog rock', 'symphonic rock']
'TXXX:lastfmtags'                                   ['rock', 'progressive rock', 'british', '70s', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.35 dB'
'TXXX:replaygain_track_peak'                        '0.516756'

========================== row from database ==========================
                                              'id'  1307887
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/electric light orchestra - mr blue sky.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  304
                                           'genre'  rock-cppex-classic
                                        'filesize'  12382073
                                           'mtime'  1636039347
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] electric light orchestra mr blue sky rock cppex classic
                                      'tag_artist'  Electric Light Orchestra
                                     'tag_release'  Definitive Collection
                                       'tag_title'  Mr. Blue Sky
                                             'bpm'  89.493
                                    'search_title'  'blue':3 'mr':1,2 'sky':4
                                   'search_artist'  'electric':1 'light':2 'orchestra':3
                                  'search_release'  'collection':2 'definitive':1
                                     'search_rest'  '00poprockelectronic':1 'blue':11 'classic':15 'cppex':14 'electric':7 'files':5,6 'light':8 'loose':3,4 'mr':10 'orchestra':9 'rock':13 'sky':12 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 'blue':3A,20 'classic':24 'collection':9C 'cppex':23 'definitive':8C 'electric':5B,16 'files':14,15 'light':6B,17 'loose':12,13 'mr':1A,2A,19 'orchestra':7B,18 'rock':22 'sky':4A,21 'unsorted':11
                                    'tag_tracknum'  11
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'progressive rock', 'british', '70s', 'classic rock']
                                        'tag_date'  1977
                                     'discogstags'  ['rock', 'prog rock', 'symphonic rock']

============================== file details ==============================
                                           'mtime'  1636039347.4733202  (2021-11-04 16:22:27)
                             'size'  12382073