======================== unified (from filesystem) ========================
                                         'bitrate'  '64.0'
                                        'duration'  '166'
                                          'artist'  'Anathema'
                                     'text_people'  ''
                                         'release'  'A Tribute to Venom'
                                           'title'  'WelcomeToHell'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive "
 "metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'eid-metal-progressive'
                                             'bpm'  '144.130'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'A Tribute to Venom'
'TBPM' (BPM (beats per minute))                     '144.130'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-progressive'
'TIT2' (Title/songname/content description)         'WelcomeToHell'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Anathema'
'TPE2' (Band/orchestra/accompaniment)               'Anathema'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive metal']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.03 dB'
'TXXX:replaygain_track_peak'                        '0.429006'

========================== row from database ==========================
                                              'id'  1323576
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Anathema - WelcomeToHell - A Tribute to Venom.mp3
                                         'working'  None
                                         'bitrate'  64
                                    'duration_sec'  166
                                           'genre'  eid-metal-progressive
                                        'filesize'  1332848
                                           'mtime'  1620310913
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] eid metal progressive
                                      'tag_artist'  Anathema
                                     'tag_release'  A Tribute to Venom
                                       'tag_title'  WelcomeToHell
                                             'bpm'  144.13
                                    'search_title'  'hell':4 'to':3 'welcome':2 'welcometohell':1
                                   'search_artist'  'anathema':1
                                  'search_release'  'a':1 'to':3 'tribute':2 'venom':4
                                     'search_rest'  '00poprockelectronic':1 'eid':7 'files':5,6 'loose':3,4 'metal':8 'progressive':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':10 'a':6C 'anathema':5B 'eid':16 'files':14,15 'hell':4A 'loose':12,13 'metal':17 'progressive':18 'to':3A,8C 'tribute':7C 'unsorted':11 'venom':9C 'welcome':2A 'welcometohell':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-1', 'q-grit-4']
                                      'lastfmtags'  ['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive metal']
                                        'tag_date'  
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310913.130529  (2021-05-06 16:21:53)
                             'size'  1332848