======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '294'
                                          'artist'  'Don Airey'
                                     'text_people'  ''
                                         'release'  'Progsoup 48'
                                           'title'  "B'cos"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fusion', 'hard rock', 'progressive rock', 'keyboard virtuoso']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '54'
                                      'tracktotal'  ''
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive;set-pl-progspace'
                                             'bpm'  '140.433'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::spa'                                         '0dayrock'
'COMM:ID3v1 Comment:XXX'                            '0dayrock'
'TALB' (Album/Movie/Show title)                     'Progsoup 48'
'TBPM' (BPM (beats per minute))                     '140.433'
'TCON' (Content type, a.k.a. Genre)                 ['rock-cppex-progressive', 'set-pl-progspace']
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         "B'cos"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Don Airey'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '54'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['fusion', 'hard rock', 'progressive rock', 'keyboard virtuoso']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.23 dB'
'TXXX:replaygain_track_peak'                        '0.365868'

========================== row from database ==========================
                                              'id'  1508018
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 48/2757 Don Airey  - B_cos.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  294
                                           'genre'  rock-cppex-progressive;set-pl-progspace
                                        'filesize'  9496358
                                           'mtime'  1620737503
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup 2757 B_cos rock cppex progressive;set pl progspace
                                      'tag_artist'  Don Airey
                                     'tag_release'  Progsoup 48
                                       'tag_title'  B'cos
                                             'bpm'  140.433
                                    'search_title'  'b':1 'bcos':3 'cos':2
                                   'search_artist'  'airey':2 'don':1
                                  'search_release'  '48':2 'progsoup':1
                                     'search_rest'  '2757':3 'b':4 'classicprogpsy':1 'cos':5 'cppex':7 'pl':12 'progressive':8,10 'progsoup':2 'progspace':13 'rock':6 'set':9,11
                                    'search_combo'  '2757':10 '48':7C 'airey':5B 'b':1A,11 'bcos':3A 'classicprogpsy':8 'cos':2A,12 'cppex':14 'don':4B 'pl':19 'progressive':15,17 'progsoup':6C,9 'progspace':20 'rock':13 'set':16,18
                                    'tag_tracknum'  54
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['fusion', 'hard rock', 'progressive rock', 'keyboard virtuoso']
                                        'tag_date'  2011
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737502.7149823  (2021-05-11 14:51:42)
                             'size'  9496358