======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '526'
                                          'artist'  'Afx'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'W32.mydoom.au@mm'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-4', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['electronica', 'idm', 'electronic', 'experimental', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '95.981'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '95.981'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TIT2' (Title/songname/content description)         'W32.mydoom.au@mm'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Afx'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['electronica', 'idm', 'electronic', 'experimental', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.60 dB'
'TXXX:replaygain_track_peak'                        '0.770588'

========================== row from database ==========================
                                              'id'  1288028
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/01 - Afx - W32.mydoom.au@mm.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  526
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  21084032
                                           'mtime'  1620572508
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 01 electronic th techno acid
                                      'tag_artist'  Afx
                                     'tag_release'  None
                                       'tag_title'  W32.mydoom.au@mm
                                             'bpm'  95.981
                                    'search_title'  'au':3 'mm':4,6 'mydoom':2 'w32':1 'w32mydoomau':5
                                   'search_artist'  'afx':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'acid':10 'electronic':7 'files':5,6 'loose':3,4 'techno':9 'th':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':8 'acid':17 'afx':7B 'au':3A 'electronic':14 'files':12,13 'loose':10,11 'mm':4A,6A 'mydoom':2A 'techno':16 'th':15 'unsorted':9 'w32':1A 'w32mydoomau':5A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-2', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'idm', 'electronic', 'experimental', 'ambient']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572507.9632864  (2021-05-09 17:01:47)
                             'size'  21084032