======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '296'
                                          'artist'  'Tabla Beat Science'
                                     'text_people'  ''
                                         'release'  'Beat Matrix'
                                           'title'  'Big Brother'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-2', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['world', 'asian underground', 'world fusion', 'tabla', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-unsorted'
                                             'bpm'  '105.094'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Beat Matrix'
'TBPM' (BPM (beats per minute))                     '105.094'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted'
'TIT2' (Title/songname/content description)         'Big Brother'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tabla Beat Science'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['world', 'asian underground', 'world fusion', 'tabla', 'electronic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.24 dB'
'TXXX:replaygain_track_peak'                        '0.783145'

========================== row from database ==========================
                                              'id'  1258556
                                            'path'  /data/Music/Bulk/00localcharacter/Tabla Beat Science/Tabla Beat Science - Big Brother.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  296
                                           'genre'  loc-unsorted
                                        'filesize'  4746721
                                           'mtime'  1620401412
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter loc unsorted
                                      'tag_artist'  Tabla Beat Science
                                     'tag_release'  Beat Matrix
                                       'tag_title'  Big Brother
                                             'bpm'  105.094
                                    'search_title'  'big':1 'brother':2
                                   'search_artist'  'beat':2 'science':3 'tabla':1
                                  'search_release'  'beat':1 'matrix':2
                                     'search_rest'  'loc':1 'unsorted':2
                                    'search_combo'  'beat':4B,6C 'big':1A 'brother':2A 'loc':8 'matrix':7C 'science':5B 'tabla':3B 'unsorted':9
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['world', 'asian underground', 'world fusion', 'tabla', 'electronic']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620401411.6673038  (2021-05-07 17:30:11)
                             'size'  4746721