======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '217'
                                          'artist'  'Charly Lownoise & Mental Theo'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Stars'
                                           'quals'  ("['Q-SYN-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-HAP-4', "
 "'Q-JZFKS-1', 'Q-OLDST-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['happy hardcore', 'dance', 'gabber', 'rave', 'hardcore', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-ent-happy hardcore'
                                             'bpm'  '84.140'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.140'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-ent-happy hardcore'
'TIT2' (Title/songname/content description)         'Stars'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Charly Lownoise & Mental Theo'
'TXXX:Mp3gain_minmax'                               '000,191'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-SYN'                                        '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['happy hardcore', 'dance', 'gabber', 'rave', 'hardcore', 'electronic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.39 dB'
'TXXX:replaygain_track_peak'                        '0.467354'

========================== row from database ==========================
                                              'id'  1333894
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Charly Lownoise & Mental Theo - Stars.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  217
                                           'genre'  electronic-th-ent-happy hardcore
                                        'filesize'  3485658
                                           'mtime'  1639511351
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] electronic th happy hardcore
                                      'tag_artist'  Charly Lownoise & Mental Theo
                                     'tag_release'  None
                                       'tag_title'  Stars
                                             'bpm'  84.14
                                    'search_title'  'stars':1
                                   'search_artist'  'charly':1 'lownoise':2 'mental':3 'theo':4
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'electronic':7 'files':5,6 'happy':9 'hardcore':10 'loose':3,4 'th':8 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'charly':2B 'electronic':12 'files':10,11 'happy':14 'hardcore':15 'loose':8,9 'lownoise':3B 'mental':4B 'stars':1A 'th':13 'theo':5B 'unsorted':7
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'Q-SYN-3', 'q-chart-2', 'q-other-2', 'Q-HAP-4', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['happy hardcore', 'dance', 'gabber', 'rave', 'hardcore', 'electronic']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1639511350.8154743  (2021-12-14 20:49:10)
                             'size'  3485658