======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '188'
                                          'artist'  'Dave Davies'
                                     'text_people'  ''
                                         'release'  'Greatest Hits (disc 2)'
                                           'title'  'Death of a Clown'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'Q-PLAY-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'Q-PIANO-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', 'hard rock', '60s', 'rock', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1967'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '84.070'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits (disc 2)'
'TBPM' (BPM (beats per minute))                     '84.070'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1967'
'TIT2' (Title/songname/content description)         'Death of a Clown'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dave Davies'
'TRCK' (Track number/Position in set)               '3'
'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:lastfmtags'                                   ['classic rock', 'hard rock', '60s', 'rock', 'oldies']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.64 dB'
'TXXX:replaygain_track_peak'                        '0.817012'

========================== row from database ==========================
                                              'id'  1303402
                                            'path'  /data/Music/Bulk/00poprockelectronic/Dave Davies/Dave Davies__The Legendary British Hits (disc 2)__cifs527e.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  188
                                           'genre'  rock-unsorted
                                        'filesize'  3015268
                                           'mtime'  1620389544
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Davies__The Legendary British 2)__cifs527e rock unsorted
                                      'tag_artist'  Dave Davies
                                     'tag_release'  Greatest Hits (disc 2)
                                       'tag_title'  Death of a Clown
                                             'bpm'  84.07
                                    'search_title'  'a':3 'clown':4 'death':1 'of':2
                                   'search_artist'  'dave':1 'davies':2
                                  'search_release'  '2':5,6 'disc':3,4 'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 '2':6,8 'british':5 'cifs527e':7,9 'davies':2 'legendary':4 'rock':10 'the':3 'unsorted':11
                                    'search_combo'  '00poprockelectronic':13 '2':11C,12C,18,20 'a':3A 'british':17 'cifs527e':19,21 'clown':4A 'dave':5B 'davies':6B,14 'death':1A 'disc':9C,10C 'greatest':7C 'hits':8C 'legendary':16 'of':2A 'rock':22 'the':15 'unsorted':23
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', 'hard rock', '60s', 'rock', 'oldies']
                                        'tag_date'  1967
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389543.8859665  (2021-05-07 14:12:23)
                             'size'  3015268