======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '248'
                                          'artist'  ''
                                     'text_people'  ''
                                         'release'  'breaks'
                                           'title'  ''
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-JZFKS-1', 'Q-GRIT-2', 'Q-BUSY-3', 'Q-SYN-3', 'Q-PLAY-2', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-4']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th'
                                             'bpm'  '109.9'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'breaks'
'TBPM' (BPM (beats per minute))                     '109.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th'
'TKEY' (Initial key)                                '10A'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '4'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-10.94 dB'
'TXXX:replaygain_track_peak'                        '1.111046'

========================== row from database ==========================
                                              'id'  1482566
                                            'path'  /data/Music/Bulk/00poprockelectronic/breaks/Wicked City - So Good (Vocal Mix).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  248
                                           'genre'  electronic-th
                                        'filesize'  9943098
                                           'mtime'  1621696894
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Wicked City So Good (Vocal Mix) electronic th
                                      'tag_artist'  None
                                     'tag_release'  breaks
                                       'tag_title'  None
                                             'bpm'  109.9
                                    'search_title'  None
                                   'search_artist'  None
                                  'search_release'  'breaks':1
                                     'search_rest'  '00poprockelectronic':1 'city':3 'electronic':10 'good':5 'mix':8,9 'so':4 'th':11 'vocal':6,7 'wicked':2
                                    'search_combo'  '00poprockelectronic':2 'breaks':1C 'city':4 'electronic':11 'good':6 'mix':9,10 'so':5 'th':12 'vocal':7,8 'wicked':3
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'Q-MIXBEAT-4', 'Q-OLDST-3', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-4', 'q-piano-1', 'Q-SYN-3', 'q-other-1', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696893.8009188  (2021-05-22 17:21:33)
                             'size'  9943098