======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '704'
                                          'artist'  "2 many DJ's"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Live@werchter 2002'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'electronica', 'mashup', 'electro', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '130.566'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '130.566'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Live@werchter 2002'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               "2 many DJ's"
'TXXX:Mp3gain_minmax'                               '159,191'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dance', 'electronica', 'mashup', 'electro', 'electronic']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.11 dB'
'TXXX:replaygain_track_peak'                        '0.511654'

========================== row from database ==========================
                                              'id'  1532346
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/2 Many DJ_s/2 many DJ_s - Live@werchter 2002.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  704
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  11276403
                                           'mtime'  1621695820
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat Many DJ_s DJ_s electronic generic or radio dance
                                      'tag_artist'  2 many DJ's
                                     'tag_release'  None
                                       'tag_title'  Live@werchter 2002
                                             'bpm'  130.566
                                    'search_title'  '2002':3 'live':1 'werchter':2
                                   'search_artist'  '2':1 'dj':3 'djs':5 'many':2 's':4
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'dj':6 'electronic':8 'generic':2 'many':5 'or':9 'radio':10 's':7 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':9 '2':4B '2002':3A 'dance':11 'dj':6B,14 'djs':8B 'electronic':16 'generic':10 'live':1A 'many':5B,13 'or':17 'radio':18 's':7B,15 'trapbeat':12 'werchter':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', '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-2', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'electronica', 'mashup', 'electro', 'electronic']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695820.2633545  (2021-05-22 17:03:40)
                             'size'  11276403