======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '159'
                                          'artist'  'Cream'
                                     'text_people'  ''
                                         'release'  'Best of'
                                           'title'  'Anyone for tennis?'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['blues rock', 'blues', 'rock', 'psychedelic', 'classic rock']"
                                     'discogstags'  "['house', 'electronic', 'eurodance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1983'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '89.9'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'C\x00+\x00B\x006\x00+\x003\x001\x005\x00D\x00+\x007\x00B\x004\x008\x00+\x00C\x006\x004\x005\x00+\x001\x001\x00E\x003\x008\x00+\x001\x005\x006\x003\x00F\x00+\x001\x008\x003\x006\x007\x00+\x001\x00B\x004\x009\x005\x00+\x001\x00E\x003\x003\x001\x00+\x002\x001\x006\x002\x009\x00+\x002\x006\x000\x007\x00F\x00+\x002\x009\x001\x00E\x001\x00+\x003\x000\x003\x00E\x005\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Best of'
'TBPM' (BPM (beats per minute))                     '89.9'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1983'
'TIT2' (Title/songname/content description)         'Anyone for tennis?'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '159093'
'TPE1' (Lead performer(s)/Soloist(s))               'Cream'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['house', 'electronic', 'eurodance']
'TXXX:lastfmtags'                                   ['blues rock', 'blues', 'rock', 'psychedelic', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.49 dB'
'TXXX:replaygain_track_peak'                        '0.806321'

========================== row from database ==========================
                                              'id'  1351722
                                            'path'  /data/Music/Bulk/00poprockelectronic/Cream/Best of - Strange Brew (1983)/Cream - Anyone for tennis_.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  159
                                           'genre'  rock-cppex-classic
                                        'filesize'  3821568
                                           'mtime'  1636039122
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Strange Brew (1983) tennis_ rock cppex classic
                                      'tag_artist'  Cream
                                     'tag_release'  Best of
                                       'tag_title'  Anyone for tennis?
                                             'bpm'  89.9
                                    'search_title'  'anyone':1 'for':2 'tennis':3
                                   'search_artist'  'cream':1
                                  'search_release'  'best':1 'of':2
                                     'search_rest'  '00poprockelectronic':1 '1983':4,5 'brew':3 'classic':9 'cppex':8 'rock':7 'strange':2 'tennis':6
                                    'search_combo'  '00poprockelectronic':7 '1983':10,11 'anyone':1A 'best':5C 'brew':9 'classic':15 'cppex':14 'cream':4B 'for':2A 'of':6C 'rock':13 'strange':8 'tennis':3A,12
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['blues rock', 'blues', 'rock', 'psychedelic', 'classic rock']
                                        'tag_date'  1983
                                     'discogstags'  ['house', 'electronic', 'eurodance']

============================== file details ==============================
                                           'mtime'  1636039121.8104227  (2021-11-04 16:18:41)
                             'size'  3821568