======================== unified (from filesystem) ========================
                                         'bitrate'  '213.037'
                                        'duration'  '361'
                                          'artist'  'Johann Sebastian Bach'
                                     'text_people'  ''
                                         'release'  'Bach Edition, I: Orchestral Works/Chamber Music'
                                           'title'  ('Concerto for flute, violin, harpsichord, strings and basso continuo in A '
 'minor, BWV 1044: II. Adagio')
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental/composers/baroque/german/classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '12'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '136.5'
                                             'key'  '8A'
                                        'acoustid'  '7e7476fd-c7c0-4790-9386-f10ee629c306'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Bach Edition, I: Orchestral Works/Chamber Music'
'TBPM' (BPM (beats per minute))                     '136.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDOR' (Original release time)                      '2006'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         ('Concerto for flute, violin, harpsichord, strings and basso continuo in A '
 'minor, BWV 1044: II. Adagio')
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Johann Sebastian Bach'
'TPE2' (Band/orchestra/accompaniment)               'Johann Sebastian Bach'
'TPOS' (Part of a set)                              '9/23'
'TPUB' (Publisher)                                  'Brilliant Classics'
'TRCK' (Track number/Position in set)               '2/12'
'TSO2'                                              'Bach, Johann Sebastian'
'TSOP' (Performer sort order)                       'Bach, Johann Sebastian'
'TSST' (Set subtitle)                               'Double Concertos 1043-1044-1055-1060'
'TXXX:ASIN'                                         'B000GCG8Y4'
'TXXX:Acoustid Id'                                  '7e7476fd-c7c0-4790-9386-f10ee629c306'
'TXXX:Artists'                                      'Johann Sebastian Bach'
'TXXX:BARCODE'                                      '5028421931029'
'TXXX:CATALOGNUMBER'                                '93102/93102/1-23'
'TXXX:MusicBrainz Album Artist Id'                  '24f1766e-9635-4d58-a4d4-9413f9f98a4c'
'TXXX:MusicBrainz Album Id'                         '5431cbcf-aee2-31a5-ba43-e28dd366b15c'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'pseudo-release'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '24f1766e-9635-4d58-a4d4-9413f9f98a4c'
'TXXX:MusicBrainz Release Group Id'                 'ad263ed1-3e94-3fa6-88bf-63d575611bb2'
'TXXX:MusicBrainz Release Track Id'                 'd306c188-7b25-3f36-80ab-76cf53e192bb'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   'instrumental/composers/baroque/german/classical'
'TXXX:originalyear'                                 '2006'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.27 dB'
'TXXX:replaygain_track_peak'                        '0.839927'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'b6af8c19-b6d7-4224-95df-1ebaafdac336')

========================== row from database ==========================
                                              'id'  264950
                                            'path'  /data/Music/Bulk/00instruments-classical/J.S. Bach/Orchestral Works & Chamber Mus/02 Concerto for flute, violin, ha.mp3
                                         'working'  None
                                         'bitrate'  213
                                    'duration_sec'  361
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  9692732
                                           'mtime'  1620561583
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical J.S. & 02 prerock classical classical instruments
                                      'tag_artist'  Johann Sebastian Bach
                                     'tag_release'  Bach Edition, I: Orchestral Works/Chamber Music
                                       'tag_title'  Concerto for flute, violin, harpsichord, strings and basso continuo in A minor, BWV 1044: II. Adagio
                                             'bpm'  136.5
                                    'search_title'  '1044':18,19 'a':14 'adagio':22 'and':10 'basso':11 'bwv':17 'concerto':1 'continuo':12 'flute':3,4 'for':2 'harpsichord':7,8 'ii':20,21 'in':13 'minor':15,16 'strings':9 'violin':5,6
                                   'search_artist'  'bach':3 'johann':1 'sebastian':2
                                  'search_release'  'bach':1 'chamber':8 'edition':2,3 'i':4,5 'music':10 'orchestral':6 'works':7 'workschamber':9
                                     'search_rest'  '00instruments':1 'classical':2 'instruments':7 'j':3 'js':5 'prerock':6 's':4
                                    'search_combo'  '00instruments':36 '1044':18A,19A 'a':14A 'adagio':22A 'and':10A 'bach':25B,26C 'basso':11A 'bwv':17A 'chamber':33C 'classical':37 'concerto':1A 'continuo':12A 'edition':27C,28C 'flute':3A,4A 'for':2A 'harpsichord':7A,8A 'i':29C,30C 'ii':20A,21A 'in':13A 'instruments':42 'j':38 'johann':23B 'js':40 'minor':15A,16A 'music':35C 'orchestral':31C 'prerock':41 's':39 'sebastian':24B 'strings':9A 'violin':5A,6A 'works':32C 'workschamber':34C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-JZFKS-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['instrumental/composers/baroque/german/classical']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561582.953664  (2021-05-09 13:59:42)
                             'size'  9692732