======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '159'
                                          'artist'  'Robert Ashley'
                                     'text_people'  ''
                                         'release'  'Improvement'
                                           'title'  'Trouble (Continued) (Scene 16)'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'electronic', 'avant garde', 'experimental "
 "opera', 'experimental']")
                                     'discogstags'  "['electronic', 'classical', 'stage & screen', 'contemporary', 'experimental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '09'
                                      'tracktotal'  '17'
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '144.6'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Improvement'
'TBPM' (BPM (beats per minute))                     '144.6'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Trouble (Continued) (Scene 16)'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Robert Ashley'
'TRCK' (Track number/Position in set)               '09/17'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'classical', 'stage & screen', 'contemporary', 'experimental']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'electronic',
 'avant garde',
 'experimental opera',
 'experimental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.09 dB'
'TXXX:replaygain_track_peak'                        '0.967082'

========================== row from database ==========================
                                              'id'  1363571
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Robert Ashley - CD 2/09. Trouble (Continued) (Scene 16).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  159
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  6398141
                                           'mtime'  1636915838
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm CD 2 09. electronic experimental oddness
                                      'tag_artist'  Robert Ashley
                                     'tag_release'  Improvement
                                       'tag_title'  Trouble (Continued) (Scene 16)
                                             'bpm'  144.6
                                    'search_title'  '16':6,7 'continued':2,3 'scene':4,5 'trouble':1
                                   'search_artist'  'ashley':2 'robert':1
                                  'search_release'  'improvement':1
                                     'search_rest'  '09':3,4 '2':2 'cd':1 'electronic':5 'experimental':6 'oddness':7
                                    'search_combo'  '09':13,14 '16':6A,7A '2':12 'ashley':9B 'cd':11 'continued':2A,3A 'electronic':15 'experimental':16 'improvement':10C 'oddness':17 'robert':8B 'scene':4A,5A 'trouble':1A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['contemporary classical', 'electronic', 'avant garde', 'experimental opera', 'experimental']
                                        'tag_date'  1992
                                     'discogstags'  ['electronic', 'classical', 'stage & screen', 'contemporary', 'experimental']

============================== file details ==============================
                                           'mtime'  1636915838.2920377  (2021-11-14 19:50:38)
                             'size'  6398141