======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '256'
                                          'artist'  'Faithless'
                                     'text_people'  ''
                                         'release'  'Back To Mine'
                                           'title'  'The Child - Alex Gopher'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'trip hop', 'electronica', 'electronic', 'house']"
                                     'discogstags'  "['electronic', 'house', 'downtempo']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '143.517'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Back To Mine'
'TBPM' (BPM (beats per minute))                     '143.517'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'The Child - Alex Gopher'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Faithless'
'TRCK' (Track number/Position in set)               '12'
'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:discogstags'                                  ['electronic', 'house', 'downtempo']
'TXXX:lastfmtags'                                   ['dance', 'trip hop', 'electronica', 'electronic', 'house']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.04 dB'
'TXXX:replaygain_track_peak'                        '0.650192'

========================== row from database ==========================
                                              'id'  1456475
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/00mixable/Faithless/2002.feb.20 Back To Mine/Faithless - The child alex gopher.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  256
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  6163952
                                           'mtime'  1636910193
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 00mixable 2002.feb.20 child alex gopher electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Faithless
                                     'tag_release'  Back To Mine
                                       'tag_title'  The Child - Alex Gopher
                                             'bpm'  143.517
                                    'search_title'  'alex':3 'child':2 'gopher':4 'the':1
                                   'search_artist'  'faithless':1
                                  'search_release'  'back':1 'mine':3 'to':2
                                     'search_rest'  '00mixable':5 '00poprockelectronic':1 '20':8 '2002':6 '2002feb20':9 'acid':18 'alex':11 'child':10 'dance':3 'downtempo':17 'electronic':13 'feb':7 'generic':2 'gopher':12 'hop':15 'jazz':19 'or':16 'trapbeat':4 'trip':14
                                    'search_combo'  '00mixable':13 '00poprockelectronic':9 '20':16 '2002':14 '2002feb20':17 'acid':26 'alex':3A,19 'back':6C 'child':2A,18 'dance':11 'downtempo':25 'electronic':21 'faithless':5B 'feb':15 'generic':10 'gopher':4A,20 'hop':23 'jazz':27 'mine':8C 'or':24 'the':1A 'to':7C 'trapbeat':12 'trip':22
                                    'tag_tracknum'  12
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trip hop', 'electronica', 'electronic', 'house']
                                        'tag_date'  2000
                                     'discogstags'  ['electronic', 'house', 'downtempo']

============================== file details ==============================
                                           'mtime'  1636910192.579031  (2021-11-14 18:16:32)
                             'size'  6163952