======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '609'
                                          'artist'  'The Who'
                                     'text_people'  ''
                                         'release'  'Tommy'
                                           'title'  'Underture'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['hard rock', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'rock opera']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  '24'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '133.9'
                                             'key'  '6A'
                                        'acoustid'  '91ad9a7a-3079-4914-bf2b-240dae737217'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Tommy'
'TBPM' (BPM (beats per minute))                     '133.9'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDOR' (Original release time)                      '1969'
'TDRC' (Recording time)                             '1996-03-04'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Jon Astley']])
'TIT2' (Title/songname/content description)         'Underture'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Who'
'TPE2' (Band/orchestra/accompaniment)               'The Who'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Polydor'
'TRCK' (Track number/Position in set)               '10/24'
'TSO2'                                              'Who, The'
'TSOP' (Performer sort order)                       'Who, The'
'TSRC' (ISRC (international standard recording code))  'GBAKW6900113/USMC16947673'
'TSSE' (Software/Hardware and settings used for encoding)  'reference libFLAC 1.1.4 20070213'
'TXXX:ASIN'                                         'B000007621'
'TXXX:Acoustid Id'                                  '91ad9a7a-3079-4914-bf2b-240dae737217'
'TXXX:BARCODE'                                      '731453104327'
'TXXX:CATALOGNUMBER'                                '531 043-2'
'TXXX:MusicBrainz Album Artist Id'                  '9fdaa16b-a6c4-4831-b87c-bc9ca8ce7eaa'
'TXXX:MusicBrainz Album Id'                         'cc6adf85-1f08-49fe-b074-22621cffc37a'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '9fdaa16b-a6c4-4831-b87c-bc9ca8ce7eaa'
'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:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'rock opera']
'TXXX:lastfmtags'                                   ['hard rock', 'rock', '60s', 'british', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.41 dB'
'TXXX:replaygain_track_peak'                        '0.497239'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'79b3c7b1-9a81-4763-92b0-ead4a12c0e47')

========================== row from database ==========================
                                              'id'  1328240
                                            'path'  /data/Music/Bulk/00poprockelectronic/tommy  (the who)/The Who - Tommy - 10  Underture.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  609
                                           'genre'  rock-cppex-classic
                                        'filesize'  24369166
                                           'mtime'  1636039392
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic tommy (the who) 10 rock cppex classic
                                      'tag_artist'  The Who
                                     'tag_release'  Tommy
                                       'tag_title'  Underture
                                             'bpm'  133.9
                                    'search_title'  'underture':1
                                   'search_artist'  'the':1 'who':2
                                  'search_release'  'tommy':1
                                     'search_rest'  '00poprockelectronic':1 'classic':9 'cppex':8 'rock':7 'the':3,4 'tommy':2 'who':5,6
                                    'search_combo'  '00poprockelectronic':5 'classic':13 'cppex':12 'rock':11 'the':2B,7,8 'tommy':4C,6 'underture':1A 'who':3B,9,10
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['hard rock', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1996
                                     'discogstags'  ['rock', 'rock opera']

============================== file details ==============================
                                           'mtime'  1636039392.0982273  (2021-11-04 16:23:12)
                             'size'  24369166