======================== unified (from filesystem) ========================
                                         'bitrate'  '251.659'
                                        'duration'  '109'
                                          'artist'  ('Dieterich Buxtehude; Ton Koopman, Amsterdam Baroque Orchestra, Amsterdam '
 'Baroque Choir')
                                     'text_people'  ''
                                         'release'  'Opera Omnia'
                                           'title'  'Suite in A, BuxWV 243: 4 Gigue'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '30'
                                      'tracktotal'  '46'
                                            'date'  '2014'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '124.775'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Opera Omnia'
'TBPM' (BPM (beats per minute))                     '124.775'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDOR' (Original release time)                      '2014'
'TDRC' (Recording time)                             '2014-11-11'
'TIT2' (Title/songname/content description)         'Suite in A, BuxWV 243: 4 Gigue'
'TKEY' (Initial key)                                '5B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Dieterich Buxtehude'
'TPE2' (Band/orchestra/accompaniment)               ('Dieterich Buxtehude; Ton Koopman, Amsterdam Baroque Orchestra, Amsterdam '
 'Baroque Choir')
'TPOS' (Part of a set)                              '2/30'
'TPUB' (Publisher)                                  'Challenge Classics'
'TRCK' (Track number/Position in set)               '30/46'
'TSO2'                                              ('Buxtehude, Dieterich; Koopman, Ton, Amsterdam Baroque Orchestra, Amsterdam '
 'Baroque Choir')
'TSOP' (Performer sort order)                       'Buxtehude, Dieterich'
'TXXX:ASIN'                                         'B00NXUKA5E'
'TXXX:Artists'                                      'Dieterich Buxtehude'
'TXXX:MusicBrainz Album Artist Id'                  'f106fb52-0b54-4135-bdfd-9ccfd7e320cb/448da1b1-43a3-4239-b2c1-f7e46463439e/fed3aea9-0069-4970-9344-522066f0b0c1/7573ab88-b3ee-424a-84ec-3f8581385e5d'
'TXXX:MusicBrainz Album Id'                         'c50a5d02-8962-45f1-aaf5-8f527ca18821'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'f106fb52-0b54-4135-bdfd-9ccfd7e320cb'
'TXXX:MusicBrainz Release Group Id'                 '0ef61ae2-bec4-4a6c-bef3-843bbb96e21f'
'TXXX:MusicBrainz Release Track Id'                 '134b9b5f-92c9-48d5-a770-1679f4760652'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:originalyear'                                 '2014'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.16 dB'
'TXXX:replaygain_track_peak'                        '0.677344'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'758829fe-d911-4950-807e-a4cb683c79ee')

========================== row from database ==========================
                                              'id'  1238092
                                            'path'  /data/Music/Bulk/00instruments-classical/Opera Omnia/Unknown Album/30 Suite In A, BuxWV 243-Gigue.mp3
                                         'working'  None
                                         'bitrate'  251
                                    'duration_sec'  109
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  3532465
                                           'mtime'  1620561727
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Unknown Album 30 In prerock classical or classical instruments
                                      'tag_artist'  Dieterich Buxtehude; Ton Koopman, Amsterdam Baroque Orchestra, Amsterdam Baroque Choir
                                     'tag_release'  Opera Omnia
                                       'tag_title'  Suite in A, BuxWV 243: 4 Gigue
                                             'bpm'  124.775
                                    'search_title'  '243':6,7 '4':8 'a':3,4 'bux':10 'buxwv':5 'gigue':9 'in':2 'suite':1 'wv':11
                                   'search_artist'  'amsterdam':7 'baroque':8 'buxtehude':2,3 'choir':11 'dieterich':1 'koopman':5,6 'orchestra':9,10 'ton':4
                                  'search_release'  'omnia':2 'opera':1
                                     'search_rest'  '00instruments':1 '30':5 'album':4 'classical':2 'in':6 'instruments':9 'or':8 'prerock':7 'unknown':3
                                    'search_combo'  '00instruments':25 '243':6A,7A '30':29 '4':8A 'a':3A,4A 'album':28 'amsterdam':18B 'baroque':19B 'bux':10A 'buxtehude':13B,14B 'buxwv':5A 'choir':22B 'classical':26 'dieterich':12B 'gigue':9A 'in':2A,30 'instruments':33 'koopman':16B,17B 'omnia':24C 'opera':23C 'or':32 'orchestra':20B,21B 'prerock':31 'suite':1A 'ton':15B 'unknown':27 'wv':11A
                                    'tag_tracknum'  30
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2014
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561726.8802073  (2021-05-09 14:02:06)
                             'size'  3532465