======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '206'
                                          'artist'  'The Blues Brothers'
                                     'text_people'  ''
                                         'release'  'Blues Brothers (disc 2)'
                                           'title'  'Minnie the Moocher'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-HHRNBTT-2', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['blues rock', 'soul', 'soundtrack', 'rock', 'blues', 'rhythm and blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop-early-blues'
                                             'bpm'  '98.983'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Blues Brothers (disc 2)'
'TBPM' (BPM (beats per minute))                     '98.983'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-blues'
'TIT2' (Title/songname/content description)         'Minnie the Moocher'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Blues Brothers'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues rock', 'soul', 'soundtrack', 'rock', 'blues', 'rhythm and blues']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.50 dB'
'TXXX:replaygain_track_peak'                        '0.645569'

========================== row from database ==========================
                                              'id'  1293373
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Blues Brothers/MBZ;#The Blues Brothers;#Blues Brothers (disc 2);#04;#Minnie the Moocher.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  206
                                           'genre'  rock-pop-early-blues
                                        'filesize'  3313153
                                           'mtime'  1620736747
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#The Brothers;#Blues 2);#04;#Minnie rock pop early blues
                                      'tag_artist'  The Blues Brothers
                                     'tag_release'  Blues Brothers (disc 2)
                                       'tag_title'  Minnie the Moocher
                                             'bpm'  98.983
                                    'search_title'  'minnie':1 'moocher':3 'the':2
                                   'search_artist'  'blues':2 'brothers':3 'the':1
                                  'search_release'  '2':5,6 'blues':1 'brothers':2 'disc':3,4
                                     'search_rest'  '00poprockelectronic':1 '04':11,14 '2':10,13 'blues':7,9,19 'brothers':6,8 'early':18 'mbz':2,4 'minnie':12,15 'pop':17 'rock':16 'the':3,5
                                    'search_combo'  '00poprockelectronic':13 '04':23,26 '2':11C,12C,22,25 'blues':5B,7C,19,21,31 'brothers':6B,8C,18,20 'disc':9C,10C 'early':30 'mbz':14,16 'minnie':1A,24,27 'moocher':3A 'pop':29 'rock':28 'the':2A,4B,15,17
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['blues rock', 'soul', 'soundtrack', 'rock', 'blues', 'rhythm and blues']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736747.3317587  (2021-05-11 14:39:07)
                             'size'  3313153