======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '77'
                                          'artist'  'Rachel Grimes'
                                     'text_people'  ''
                                         'release'  'Book of Leaves'
                                           'title'  'At the Pond'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['contemporary classical', 'neoclassical', 'piano', 'cinematic', 'ambient']"
                                     'discogstags'  "['classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '14'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '145.895'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Book of Leaves'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDOR' (Original release time)                      '2009'
'TDRC' (Recording time)                             '2009-09-22'
'TIT2' (Title/songname/content description)         'At the Pond'
'TKEY' (Initial key)                                '1A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Rachel Grimes'
'TPE2' (Band/orchestra/accompaniment)               'Rachel Grimes'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Mossgrove Music'
'TRCK' (Track number/Position in set)               '10/14'
'TSO2'                                              'Grimes, Rachel'
'TSOP' (Performer sort order)                       'Grimes, Rachel'
'TXXX:BARCODE'                                      '616892057369'
'TXXX:CatalogID'                                    'KBR007'
'TXXX:Country'                                      'US'
'TXXX:DiscogsID'                                    '1945040'
'TXXX:MusicBrainz Album Artist Id'                  '5cd341c1-2b4b-4296-a5c8-147fcb7b2e4e'
'TXXX:MusicBrainz Album Id'                         '62b5c9d2-f960-4cdc-bb5d-2c9fc41443f2'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '5cd341c1-2b4b-4296-a5c8-147fcb7b2e4e'
'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:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'classical'
'TXXX:lastfmtags'                                   ['contemporary classical', 'neoclassical', 'piano', 'cinematic', 'ambient']
'TXXX:position'                                     'B3'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+4.07 dB'
'TXXX:replaygain_track_peak'                        '0.504348'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'c7a1a707-4bce-4207-bcde-74d6b7381ff3')

========================== row from database ==========================
                                              'id'  1354697
                                            'path'  /data/Music/Bulk/00instruments-classical/rachel grimes - book of leaves/10 - at the pond.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  77
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  3151182
                                           'mtime'  1620574267
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical rachel grimes book leaves 10 at pond prerock classical or classical instruments
                                      'tag_artist'  Rachel Grimes
                                     'tag_release'  Book of Leaves
                                       'tag_title'  At the Pond
                                             'bpm'  145.895
                                    'search_title'  'at':1 'pond':3 'the':2
                                   'search_artist'  'grimes':2 'rachel':1
                                  'search_release'  'book':1 'leaves':3 'of':2
                                     'search_rest'  '00instruments':1 'at':7 'book':5 'classical':2 'grimes':4 'instruments':11 'leaves':6 'or':10 'pond':8 'prerock':9 'rachel':3
                                    'search_combo'  '00instruments':9 'at':1A,15 'book':6C,13 'classical':10 'grimes':5B,12 'instruments':19 'leaves':8C,14 'of':7C 'or':18 'pond':3A,16 'prerock':17 'rachel':4B,11 'the':2A
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'neoclassical', 'piano', 'cinematic', 'ambient']
                                        'tag_date'  2009
                                     'discogstags'  ['classical']

============================== file details ==============================
                                           'mtime'  1620574266.691213  (2021-05-09 17:31:06)
                             'size'  3151182