======================== unified (from filesystem) ========================
                                         'bitrate'  '228.875'
                                        'duration'  '127'
                                          'artist'  'Peter Pan Speedrock'
                                     'text_people'  'Peter Pan Speedrock'
                                         'release'  'Premium Quality...Serve Loud!'
                                           'title'  'Rearview Nightmare'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock n roll', 'rock', 'hard rock', 'dutch', 'speedrock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '13'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'rock-gr-speed'
                                             'bpm'  '139'
                                             'key'  '3A'
                                        'acoustid'  '2d992300-7c3d-4786-a2f9-48a8a12ed5ba'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Premium Quality...Serve Loud!'
'TBPM' (BPM (beats per minute))                     '139'
'TCOM' (Composer)                                   'Peter Pan Speedrock'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-speed'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001-11-05'
'TIT2' (Title/songname/content description)         'Rearview Nightmare'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Peter Pan Speedrock'
'TPE2' (Band/orchestra/accompaniment)               'Peter Pan Speedrock'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Suburban'
'TRCK' (Track number/Position in set)               '13/13'
'TSO2'                                              'Peter Pan Speedrock'
'TSOP' (Performer sort order)                       'Peter Pan Speedrock'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:ASIN'                                         'B0000630V0'
'TXXX:Acoustid Id'                                  '2d992300-7c3d-4786-a2f9-48a8a12ed5ba'
'TXXX:Artists'                                      'Peter Pan Speedrock'
'TXXX:BARCODE'                                      '8716059999326'
'TXXX:CATALOGNUMBER'                                'BURBCD 019'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '0'
'TXXX:MusicBrainz Album Artist Id'                  '986691af-d52c-48ad-9aef-e37562f26f4d'
'TXXX:MusicBrainz Album Id'                         '9c85c2aa-21c1-4ba1-a35d-94f7300f5eb6'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '986691af-d52c-48ad-9aef-e37562f26f4d'
'TXXX:MusicBrainz Release Group Id'                 'b7b53274-cc5c-37ec-b546-e6669aac0ad7'
'TXXX:MusicBrainz Release Track Id'                 'ca3962c5-a882-31cd-b15b-9944d99da23d'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:WM/EncodingTime'                              '1874643072'
'TXXX:WM/MediaPrimaryClassID'                       '{D1607DBC-E323-4BE2-86A1-48A42A28441E}'
'TXXX:WM/Provider'                                  'AMG'
'TXXX:WM/ProviderRating'                            '0'
'TXXX:WM/ProviderStyle'                             'Rock'
'TXXX:WM/UniqueFileIdentifier'                      'AMGa_id=R   564655;AMGp_id=P   516166;AMGt_id=T  5564004'
'TXXX:WM/WMADRCAverageReference'                    '14230'
'TXXX:WM/WMADRCPeakReference'                       '32393'
'TXXX:WM/Year'                                      '2001'
'TXXX:WMFSDKNeeded'                                 '0.0.0.0000'
'TXXX:WMFSDKVersion'                                '10.00.00.3646'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['rock n roll', 'rock', 'hard rock', 'dutch', 'speedrock']
'TXXX:originalyear'                                 '2001'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.94 dB'
'TXXX:replaygain_track_peak'                        '0.423230'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'061acc1d-3312-484a-a5e2-bb0328eecb55')

========================== row from database ==========================
                                              'id'  968831
                                            'path'  /data/Music/Bulk/00dwimp/Peter Pan Speedrock/Premium Quality...Serve Loud/13 Rearview Nightmare.wma.mp3
                                         'working'  None
                                         'bitrate'  228
                                    'duration_sec'  127
                                           'genre'  rock-gr-speed
                                        'filesize'  3720657
                                           'mtime'  1636917473
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 13 Nightmare.wma gr speed
                                      'tag_artist'  Peter Pan Speedrock
                                     'tag_release'  Premium Quality...Serve Loud!
                                       'tag_title'  Rearview Nightmare
                                             'bpm'  139.0
                                    'search_title'  'nightmare':2 'rearview':1
                                   'search_artist'  'pan':2 'peter':1 'speedrock':3
                                  'search_release'  'loud':5 'premium':1 'quality':2 'qualityserve':4 'serve':3
                                     'search_rest'  '00dwimp':1 'gr':5 'nightmare':2 'nightmarewma':4 'speed':6 'wma':3
                                    'search_combo'  '00dwimp':11 'gr':15 'loud':10C 'nightmare':2A,12 'nightmarewma':14 'pan':4B 'peter':3B 'premium':6C 'quality':7C 'qualityserve':9C 'rearview':1A 'serve':8C 'speed':16 'speedrock':5B 'wma':13
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['rock n roll', 'rock', 'hard rock', 'dutch', 'speedrock']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636917472.888668  (2021-11-14 20:17:52)
                             'size'  3720657