======================== unified (from filesystem) ========================
                                         'bitrate'  '16.0'
                                        'duration'  '2077'
                                          'artist'  'Opgezwolle'
                                     'text_people'  ''
                                         'release'  'Vloeistof'
                                           'title'  'Sporen'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-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-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['hiphop', 'dutch', 'nederhop', 'rap', 'hip hop']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '94.064'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Vloeistof'
'TBPM' (BPM (beats per minute))                     '94.064'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Sporen'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Opgezwolle'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['hiphop', 'dutch', '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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.44 dB'
'TXXX:replaygain_track_peak'                        '0.384357'

========================== row from database ==========================
                                              'id'  1271578
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Opgezwolle/Opgezwolle - Vloeistof (2003, Top Notch)/01 - Sporen.mp3
                                         'working'  None
                                         'bitrate'  16
                                    'duration_sec'  2077
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  4157331
                                           'mtime'  1620586391
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism (2003, Top Notch) 01 hip hop rnb rap turntablism
                                      'tag_artist'  Opgezwolle
                                     'tag_release'  Vloeistof
                                       'tag_title'  Sporen
                                             'bpm'  94.064
                                    'search_title'  'sporen':1
                                   'search_artist'  'opgezwolle':1
                                  'search_release'  'vloeistof':1
                                     'search_rest'  '2003':5,6 'hip':10 'hiphop':1 'hop':11 'notch':8,9 'rap':2 'rnb':3 'top':7 'turntablism':4
                                    'search_combo'  '2003':8,9 'hip':13 'hiphop':4 'hop':14 'notch':11,12 'opgezwolle':2B 'rap':5 'rnb':6 'sporen':1A 'top':10 'turntablism':7 'vloeistof':3C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', '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'  ['hiphop', 'dutch', 'nederhop', 'rap', 'hip hop']
                                        'tag_date'  2003
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620586391.166796  (2021-05-09 20:53:11)
                             'size'  4157331