======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '369'
                                          'artist'  'Frank Zappa'
                                     'text_people'  ''
                                         'release'  "Joe's Garage (disc 1)"
                                           'title'  "Joe's Garage"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-OLDST-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-experimental'
                                             'bpm'  '88.168'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "Joe's Garage (disc 1)"
'TBPM' (BPM (beats per minute))                     '88.168'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-experimental'
'TIT2' (Title/songname/content description)         "Joe's Garage"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Frank Zappa'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.96 dB'
'TXXX:replaygain_track_peak'                        '0.582256'

========================== row from database ==========================
                                              'id'  1528636
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Frank Zappa/Joe_s Garage (Disc 1)/Joe's Garage (disc 1)/MBZ;#Frank Zappa;#Joe_s Garage (disc 1);#02;#Joe_s Garage.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  369
                                           'genre'  ifs-songwriter-experimental
                                        'filesize'  5907993
                                           'mtime'  1636400811
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Joe_s (Disc MBZ;#Frank Zappa;#Joe_s 1);#02;#Joe_s ifs songwriter experimental
                                      'tag_artist'  Frank Zappa
                                     'tag_release'  Joe's Garage (disc 1)
                                       'tag_title'  Joe's Garage
                                             'bpm'  88.168
                                    'search_title'  'garage':4 'joe':1 'joes':3 's':2
                                   'search_artist'  'frank':1 'zappa':2
                                  'search_release'  '1':7,8 'disc':5,6 'garage':4 'joe':1 'joes':3 's':2
                                     'search_rest'  '00singer':1 '02':19,23 '1':18,22 'disc':6,7 'eos':3 'experimental':27 'frank':9,11 'ifs':26 'joe':4,13,16,20,24 'mbz':8,10 's':5,14,17,21,25 'songwriter':2 'zappa':12,15
                                    'search_combo'  '00singer':15 '02':33,37 '1':13C,14C,32,36 'disc':11C,12C,20,21 'eos':17 'experimental':41 'frank':5B,23,25 'garage':4A,10C 'ifs':40 'joe':1A,7C,18,27,30,34,38 'joes':3A,9C 'mbz':22,24 's':2A,8C,19,28,31,35,39 'songwriter':16 'zappa':6B,26,29
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400811.119963  (2021-11-08 20:46:51)
                             'size'  5907993