======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '162'
                                          'artist'  'Sir Richard Bishop'
                                     'text_people'  ''
                                         'release'  'FLIRTATION DEVICES'
                                           'title'  'Six Strings in the Nuthouse'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'guitar', 'experimental', 'folk', 'acoustic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '6'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'mi-guitar-acoustic'
                                             'bpm'  '110.6'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'FLIRTATION DEVICES'
'TBPM' (BPM (beats per minute))                     '110.6'
'TCON' (Content type, a.k.a. Genre)                 'mi-guitar-acoustic'
'TIT2' (Title/songname/content description)         'Six Strings in the Nuthouse'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sir Richard Bishop'
'TRCK' (Track number/Position in set)               '1/6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'guitar', 'experimental', 'folk', 'acoustic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.99 dB'
'TXXX:replaygain_track_peak'                        '0.827070'

========================== row from database ==========================
                                              'id'  414300
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/flirtation-devices/1-Six Strings in the Nuthouse.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  162
                                           'genre'  mi-guitar-acoustic
                                        'filesize'  5201920
                                           'mtime'  1628353422
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm flirtation devices 1 mi guitar acoustic
                                      'tag_artist'  Sir Richard Bishop
                                     'tag_release'  FLIRTATION DEVICES
                                       'tag_title'  Six Strings in the Nuthouse
                                             'bpm'  110.6
                                    'search_title'  'in':3 'nuthouse':5 'six':1 'strings':2 'the':4
                                   'search_artist'  'bishop':3 'richard':2 'sir':1
                                  'search_release'  'devices':2 'flirtation':1
                                     'search_rest'  '1':3 'acoustic':6 'devices':2 'flirtation':1 'guitar':5 'mi':4
                                    'search_combo'  '1':13 'acoustic':16 'bishop':8B 'devices':10C,12 'flirtation':9C,11 'guitar':15 'in':3A 'mi':14 'nuthouse':5A 'richard':7B 'sir':6B 'six':1A 'strings':2A 'the':4A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['instrumental', 'guitar', 'experimental', 'folk', 'acoustic']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628353421.7455192  (2021-08-07 18:23:41)
                             'size'  5201920