======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '406'
                                          'artist'  'Asterix'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-4', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['german', 'classic rock', 'hard rock', 'progressive rock', '70s']"
                                     'discogstags'  '["children\'s", \'non-music\', \'spoken word\']'
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-th-trance-goa or psy'
                                             'bpm'  '135.2'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '135.2'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-trance-goa or psy'
'TDRC' (Recording time)                             '2000'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Asterix'
'TXXX:Mp3gain_minmax'                               '066,207'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ["children's", 'non-music', 'spoken word']
'TXXX:lastfmtags'                                   ['german', 'classic rock', 'hard rock', 'progressive rock', '70s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.16 dB'
'TXXX:replaygain_track_peak'                        '0.639677'

========================== row from database ==========================
                                              'id'  1336374
                                            'path'  /data/Music/Bulk/00poprockelectronic/Astrix/more/#astrix - Deep Rising (Unreleased).mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  406
                                           'genre'  electronic-th-trance-goa or psy
                                        'filesize'  12997549
                                           'mtime'  1620567468
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Astrix more #astrix Deep Rising (Unreleased) electronic th trance goa or psy
                                      'tag_artist'  Asterix
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  135.2
                                    'search_title'  None
                                   'search_artist'  'asterix':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'astrix':2,4,5 'deep':6 'electronic':10 'goa':13 'more':3 'or':14 'psy':15 'rising':7 'th':11 'trance':12 'unreleased':8,9
                                    'search_combo'  '00poprockelectronic':2 'asterix':1B 'astrix':3,5,6 'deep':7 'electronic':11 'goa':14 'more':4 'or':15 'psy':16 'rising':8 'th':12 'trance':13 'unreleased':9,10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-4', 'q-play-2', 'Q-OLDST-4', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-piano-1', 'q-syn-4', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['german', 'classic rock', 'hard rock', 'progressive rock', '70s']
                                        'tag_date'  2000
                                     'discogstags'  ["children's", 'non-music', 'spoken word']

============================== file details ==============================
                                           'mtime'  1620567468.4567075  (2021-05-09 15:37:48)
                             'size'  12997549