======================== unified (from filesystem) ========================
                                         'bitrate'  '217.845'
                                        'duration'  '558'
                                          'artist'  'Pascoal, Hermeto'
                                     'text_people'  ''
                                         'release'  'Slaves Mass'
                                           'title'  'Mixing Pot'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '111'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:picture'                                      type PictureType.COVER_FRONT (Cover (front)) b'picture'
                                     
'COMM:Media Jukebox: Date:\x00\x00\x00'             '28126'
'COMM:Media Jukebox: Gnosis:\x00\x00\x00'           '10.9300003051757812'
'COMM:Media Jukebox: Intensity:\x00\x00\x00'        '2'
'COMM:Media Jukebox: Tool Name:\x00\x00\x00'        'Media Center'
'COMM:Media Jukebox: Tool Version:\x00\x00\x00'     '12.0.534'
'PRIV:AverageLevel:S\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'S\x12\x00\x00')
'PRIV:PeakValue:Ó|\x00\x00'                         PRIV(owner='PeakValue', data=b'\xd3|\x00\x00')
'TALB' (Album/Movie/Show title)                     'Slaves Mass'
'TBPM' (BPM (beats per minute))                     '111'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Mixing Pot'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hermeto Pascoal'
'TPE2' (Band/orchestra/accompaniment)               'Pascoal, Hermeto'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+13.33 dB'
'TXXX:replaygain_track_peak'                        '0.121903'

========================== row from database ==========================
                                              'id'  1119559
                                            'path'  /data/Music/Bulk/00instruments-classical/Hermeto Pascoal – Slaves mass (1977)/pascoal, hermeto [slaves mass]-(brazil)-01-mixing pot.mp3
                                         'working'  None
                                         'bitrate'  217
                                    'duration_sec'  558
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  15282048
                                           'mtime'  1620539570
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical – mass (1977) pascoal, hermeto [slaves mass] (brazil) 01 mixing pot prerock jb jazz unsorted
                                      'tag_artist'  Pascoal, Hermeto
                                     'tag_release'  Slaves Mass
                                       'tag_title'  Mixing Pot
                                             'bpm'  111.0
                                    'search_title'  'mixing':1 'pot':2
                                   'search_artist'  'hermeto':3 'pascoal':1,2
                                  'search_release'  'mass':2 'slaves':1
                                     'search_rest'  '00instruments':1 '1977':4,5 'brazil':12,13 'classical':2 'hermeto':8 'jazz':18 'jb':17 'mass':3,11 'mixing':14 'pascoal':6,7 'pot':15 'prerock':16 'slaves':9,10 'unsorted':19
                                    'search_combo'  '00instruments':8 '1977':11,12 'brazil':19,20 'classical':9 'hermeto':5B,15 'jazz':25 'jb':24 'mass':7C,10,18 'mixing':1A,21 'pascoal':3B,4B,13,14 'pot':2A,22 'prerock':23 'slaves':6C,16,17 'unsorted':26
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1977
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620539570.4683843  (2021-05-09 07:52:50)
                             'size'  15282048