======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '116'
                                          'artist'  'Tommy Steele'
                                     'text_people'  ''
                                         'release'  'The Decca Years 1956-1963 Cd1'
                                           'title'  'Rock With The Caveman'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['rock and roll', '60s', 'british', 'pop', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '88.670'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:Ñ\x11\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xd1\x11\x00\x00')
'PRIV:PeakValue:Ú]\x00\x00'                         PRIV(owner='PeakValue', data=b'\xda]\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')
'TALB' (Album/Movie/Show title)                     'The Decca Years 1956-1963 Cd1'
'TBPM' (BPM (beats per minute))                     '88.670'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TIT2' (Title/songname/content description)         'Rock With The Caveman'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tommy Steele'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', '60s', 'british', 'pop', 'oldies']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.93 dB'
'TXXX:replaygain_track_peak'                        '0.366623'

========================== row from database ==========================
                                              'id'  763367
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/Tommy Steele - Rock With The Caveman 1.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  116
                                           'genre'  set-pl-spelling
                                        'filesize'  1898207
                                           'mtime'  1620356450
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  Tommy Steele
                                     'tag_release'  The Decca Years 1956-1963 Cd1
                                       'tag_title'  Rock With The Caveman
                                             'bpm'  88.67
                                    'search_title'  'caveman':4 'rock':1 'the':3 'with':2
                                   'search_artist'  'steele':2 'tommy':1
                                  'search_release'  '1956':4 '19561963':6 '1963':5 'cd1':7 'decca':2 'the':1 'years':3
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':15 '0playlists':14 '1956':10C '19561963':12C '1963':11C 'caveman':4A 'cd1':13C 'decca':8C 'pl':19 'rock':1A 'set':18 'spelling':17 'steele':6B 'the':3A,7C 'themes':16 'tommy':5B 'with':2A 'years':9C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', '60s', 'british', 'pop', 'oldies']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620356450.0556047  (2021-05-07 05:00:50)
                             'size'  1898207