======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '187'
                                          'artist'  'Vengaboys'
                                     'text_people'  ''
                                         'release'  'Greatest Hits!'
                                           'title'  'To Brazil! (Medium Radio)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['90s', 'dance', 'pop', 'eurodance', 'dutch', 'electronic']"
                                     'discogstags'  "['electronic', 'trance', 'euro house']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '136.920'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits!'
'TBPM' (BPM (beats per minute))                     '136.920'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'To Brazil! (Medium Radio)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Vengaboys'
'TRCK' (Track number/Position in set)               '10'
'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', 'trance', 'euro house']
'TXXX:lastfmtags'                                   ['90s', 'dance', 'pop', 'eurodance', 'dutch', 'electronic']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'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'                        '-2.13 dB'
'TXXX:replaygain_track_peak'                        '0.503932'

========================== row from database ==========================
                                              'id'  1325776
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Vengaboys/The Vengaboys - To Brazil! (Medium Radio) - 07.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  187
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  2994450
                                           'mtime'  1621696655
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic The The 07 electronic generic or radio dance
                                      'tag_artist'  Vengaboys
                                     'tag_release'  Greatest Hits!
                                       'tag_title'  To Brazil! (Medium Radio)
                                             'bpm'  136.92
                                    'search_title'  'brazil':2 'medium':3,4 'radio':5,6 'to':1
                                   'search_artist'  'vengaboys':1
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 'dance':7 'electronic':3 'generic':4 'or':5 'radio':6 'the':2
                                    'search_combo'  '00poprockelectronic':10 'brazil':2A 'dance':16 'electronic':12 'generic':13 'greatest':8C 'hits':9C 'medium':3A,4A 'or':14 'radio':5A,6A,15 'the':11 'to':1A 'vengaboys':7B
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  8A
                                           '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-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['90s', 'dance', 'pop', 'eurodance', 'dutch', 'electronic']
                                        'tag_date'  1998
                                     'discogstags'  ['electronic', 'trance', 'euro house']

============================== file details ==============================
                                           'mtime'  1621696655.285358  (2021-05-22 17:17:35)
                             'size'  2994450