======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '230'
                                          'artist'  'Crystal Castles'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Celestica (Album Mix)'
                                           'quals'  ("['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-3', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', '8 bit', 'new rave', 'electro', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '126.017'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '126.017'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2010'
'TIT2' (Title/songname/content description)         'Celestica (Album Mix)'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Crystal Castles'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', '8 bit', 'new rave', 'electro', 'electronic']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.83 dB'
'TXXX:replaygain_track_peak'                        '0.402687'

========================== row from database ==========================
                                              'id'  1456523
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/00mixable/Crystal Castles/crystal-castles-celestica-album-mix.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  230
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  7368402
                                           'mtime'  1620558220
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 00mixable crystal castles celestica album mix electronic generic or radio dance
                                      'tag_artist'  Crystal Castles
                                     'tag_release'  None
                                       'tag_title'  Celestica (Album Mix)
                                             'bpm'  126.017
                                    'search_title'  'album':2,3 'celestica':1 'mix':4,5
                                   'search_artist'  'castles':2 'crystal':1
                                  'search_release'  
                                     'search_rest'  '00mixable':5 '00poprockelectronic':1 'album':9 'castles':7 'celestica':8 'crystal':6 'dance':3 'electronic':11 'generic':2 'mix':10 'or':12 'radio':13 'trapbeat':4
                                    'search_combo'  '00mixable':12 '00poprockelectronic':8 'album':2A,3A,16 'castles':7B,14 'celestica':1A,15 'crystal':6B,13 'dance':10 'electronic':18 'generic':9 'mix':4A,5A,17 'or':19 'radio':20 'trapbeat':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           '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-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', '8 bit', 'new rave', 'electro', 'electronic']
                                        'tag_date'  2010
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620558219.855561  (2021-05-09 13:03:39)
                             'size'  7368402