======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '287'
                                          'artist'  'Zero 7'
                                     'text_people'  'Henry Binns/Sam Hardaker'
                                         'release'  'Simple Things'
                                           'title'  'Polaris'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronica', 'electronic', 'trip hop', 'downtempo', 'chillout']"
                                     'discogstags'  "['electronic', 'trip hop', 'future jazz', 'downtempo']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '135.637'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'Simple Things'
'TBPM' (BPM (beats per minute))                     '135.637'
'TCOM' (Composer)                                   'Henry Binns/Sam Hardaker'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Polaris'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Zero 7'
'TPE2' (Band/orchestra/accompaniment)               'Zero 7'
'TPUB' (Publisher)                                  'Ultimate Dilemma'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'trip hop', 'future jazz', 'downtempo']
'TXXX:lastfmtags'                                   ['electronica', 'electronic', 'trip hop', 'downtempo', 'chillout']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.21 dB'
'TXXX:replaygain_track_peak'                        '0.544762'

========================== row from database ==========================
                                              'id'  1297563
                                            'path'  /data/Music/Bulk/00poprockelectronic/Zero 7/Simple Things/Polaris.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  287
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  4603594
                                           'mtime'  1636911470
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Zero 7
                                     'tag_release'  Simple Things
                                       'tag_title'  Polaris
                                             'bpm'  135.637
                                    'search_title'  'polaris':1
                                   'search_artist'  '7':2 'zero':1
                                  'search_release'  'simple':1 'things':2
                                     'search_rest'  '00poprockelectronic':1 'acid':7 'downtempo':6 'electronic':2 'hop':4 'jazz':8 'or':5 'trip':3
                                    'search_combo'  '00poprockelectronic':6 '7':3B 'acid':12 'downtempo':11 'electronic':7 'hop':9 'jazz':13 'or':10 'polaris':1A 'simple':4C 'things':5C 'trip':8 'zero':2B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'electronic', 'trip hop', 'downtempo', 'chillout']
                                        'tag_date'  2001
                                     'discogstags'  ['electronic', 'trip hop', 'future jazz', 'downtempo']

============================== file details ==============================
                                           'mtime'  1636911470.497819  (2021-11-14 18:37:50)
                             'size'  4603594