======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '157'
                                          'artist'  'De Huilende Rappers'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Kans van Slagen'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-3', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['piraatjes', 'all', 'nederhop', 'rap', 'hip hop']"
                                     'discogstags'  "['gangsta', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism;loc-eur-netherlands'
                                             'bpm'  '94.991'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '94.991'
'TCON' (Content type, a.k.a. Genre)                 ['hip hop or rnb or rap or turntablism', 'loc-eur-netherlands']
'TIT2' (Title/songname/content description)         'Kans van Slagen'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'De Huilende Rappers'
'TXXX:Mp3gain_minmax'                               '135,190'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['gangsta', 'hip hop']
'TXXX:lastfmtags'                                   ['piraatjes', 'all', 'nederhop', 'rap', 'hip hop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.36 dB'
'TXXX:replaygain_track_peak'                        '0.546654'

========================== row from database ==========================
                                              'id'  937206
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00dutch/Huilende Rappers/Kans van Slagen.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  157
                                           'genre'  hip hop or rnb or rap or turntablism;loc-eur-netherlands
                                        'filesize'  2515233
                                           'mtime'  1620526947
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00dutch hip hop or rnb or rap or turntablism;loc eur netherlands
                                      'tag_artist'  De Huilende Rappers
                                     'tag_release'  None
                                       'tag_title'  Kans van Slagen
                                             'bpm'  94.991
                                    'search_title'  'kans':1 'slagen':3 'van':2
                                   'search_artist'  'de':1 'huilende':2 'rappers':3
                                  'search_release'  
                                     'search_rest'  '00dutch':4 '00mid':1 'eur':14 'europe':3 'hip':5 'hop':6 'loc':11,13 'netherlands':15 'north':2 'or':7 'rap':9 'rnb':8 'turntablism':10,12
                                    'search_combo'  '00dutch':10 '00mid':7 'de':4B 'eur':20 'europe':9 'hip':11 'hop':12 'huilende':5B 'kans':1A 'loc':17,19 'netherlands':21 'north':8 'or':13 'rap':15 'rappers':6B 'rnb':14 'slagen':3A 'turntablism':16,18 'van':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['piraatjes', 'all', 'nederhop', 'rap', 'hip hop']
                                        'tag_date'  
                                     'discogstags'  ['gangsta', 'hip hop']

============================== file details ==============================
                                           'mtime'  1620526947.2562158  (2021-05-09 04:22:27)
                             'size'  2515233