======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '23'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'BBC Sound Effects Library, Volume 14: Cities'
                                           'title'  'Big Ben, Chiming 12 Hour'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-2', "
 "'Q-HHRNBTT-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '30'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'nonmusic-fragments-sounds and sfx'
                                             'bpm'  '135.910'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'1\x00E\x00+\x00B\x009\x00+\x001\x009\x00F\x007\x00+\x002\x000\x00E\x004\x00+\x002\x007\x00C\x00B\x00+\x002\x00F\x009\x006\x00+\x003\x00B\x006\x00A\x00+\x004\x00E\x004\x008\x00+\x005\x002\x00C\x003\x00+\x005\x006\x001\x00D\x00+\x006\x004\x002\x003\x00+\x007\x004\x00B\x00A\x00+\x007\x00D\x00A\x00F\x00+\x00B\x00E\x00B\x006\x00+\x00C\x00A\x006\x002\x00+\x00F\x005\x00D\x009\x00+\x001\x002\x00B\x004\x004\x00+\x001\x002\x00D\x001\x00F\x00+\x001\x002\x00E\x00C\x00D\x00+\x001\x006\x009\x007\x009\x00+\x001\x007\x00D\x00A\x001\x00+\x001\x00D\x005\x00B\x00A\x00+\x002\x002\x003\x006\x007\x00+\x002\x006\x00C\x008\x002\x00+\x002\x00B\x005\x003\x00E\x00+\x003\x000\x004\x007\x003\x00+\x003\x001\x008\x00F\x00F\x00+\x003\x001\x00B\x00B\x00E\x00+\x003\x006\x002\x00E\x00F\x00+\x003\x00A\x00C\x009\x00D\x00+\x003\x00D\x00E\x00C\x00F\x00+\x004\x004\x00E\x009\x009\x00\x00\x00')
'PRIV:AverageLevel:¦\x05\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xa6\x05\x00\x00')
'PRIV:PeakValue:b8\x00\x00'                         PRIV(owner='PeakValue', data=b'b8\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/Provider:U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00'  PRIV(owner='WM/Provider', data=b'U\x00s\x00e\x00r\x00 \x00F\x00e\x00e\x00d\x00b\x00a\x00c\x00k\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/WMCollectionID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMCollectionID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:WM/WMContentID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/WMContentID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'BBC Sound Effects Library, Volume 14: Cities'
'TBPM' (BPM (beats per minute))                     '135.910'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-fragments-sounds and sfx'
'TIT2' (Title/songname/content description)         'Big Ben, Chiming 12 Hour'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '23560'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TPE2' (Band/orchestra/accompaniment)               '[unknown]'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'BBC Sound Effects Library'
'TRCK' (Track number/Position in set)               '3/30'
'TSO2'                                              '[unknown]'
'TSOP' (Performer sort order)                       '[unknown]'
'TXXX:Artists'                                      '[unknown]'
'TXXX:MusicBrainz Album Artist Id'                  '125ec42a-7229-4250-afc5-e057484327fe'
'TXXX:MusicBrainz Album Id'                         'ab2ba8b2-b4bb-4b66-952e-b667d4bb94bd'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'other'
'TXXX:MusicBrainz Artist Id'                        '125ec42a-7229-4250-afc5-e057484327fe'
'TXXX:MusicBrainz Release Group Id'                 'f70af9d7-7437-4449-b2a8-94d35e568bbb'
'TXXX:MusicBrainz Release Track Id'                 'd66501fb-00d6-3b1d-9ae3-fc391be2301d'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'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-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.87 dB'
'TXXX:replaygain_track_peak'                        '0.620218'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'e7d583aa-191d-412c-8136-408d476b7033')

========================== row from database ==========================
                                              'id'  945339
                                            'path'  /data/Music/Bulk/0nonmusic/00sfx/Sound Effects Library-14 (Cities)/03 Big Ben - chiming 1-2 hour.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  23
                                           'genre'  nonmusic-fragments-sounds and sfx
                                        'filesize'  945252
                                           'mtime'  1636404229
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00sfx (Cities) 03 chiming hour nonmusic fragments sounds and sfx
                                      'tag_artist'  [unknown]
                                     'tag_release'  BBC Sound Effects Library, Volume 14: Cities
                                       'tag_title'  Big Ben, Chiming 12 Hour
                                             'bpm'  135.91
                                    'search_title'  'ben':2,3 'big':1 'chiming':4 'hour':5
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '14':7,8 'bbc':1 'cities':9 'effects':3 'library':4,5 'sound':2 'volume':6
                                     'search_rest'  '00sfx':2 '0nonmusic':1 'and':10 'chiming':5 'cities':3,4 'fragments':8 'hour':6 'nonmusic':7 'sfx':11 'sounds':9
                                    'search_combo'  '00sfx':18 '0nonmusic':17 '14':14C,15C 'and':26 'bbc':8C 'ben':2A,3A 'big':1A 'chiming':4A,21 'cities':16C,19,20 'effects':10C 'fragments':24 'hour':5A,22 'library':11C,12C 'nonmusic':23 'sfx':27 'sound':9C 'sounds':25 'unknown':6B,7B 'volume':13C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636404229.3327508  (2021-11-08 21:43:49)
                             'size'  945252