======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '264'
                                          'artist'  'Jawbreaker'
                                     'text_people'  ''
                                         'release'  'Unfun'
                                           'title'  'Busy'
                                           'quals'  ("['Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['punk', 'punk rock', 'emo', 'pop punk', 'indie']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1990'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '121.337'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Unfun'
'TBPM' (BPM (beats per minute))                     '121.337'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1990'
'TIT2' (Title/songname/content description)         'Busy'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jawbreaker'
'TXXX:Mp3gain_minmax'                               '000,193'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['punk', 'punk rock', 'emo', 'pop punk', 'indie']
'TXXX:original release date'                        ['2002', '1990']
'TXXX:q-bass'                                       '3'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.74 dB'
'TXXX:replaygain_track_peak'                        '0.618880'

========================== row from database ==========================
                                              'id'  1291638
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/Busy.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  264
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  4231234
                                           'mtime'  1620566815
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s electronic generic or radio unsorted
                                      'tag_artist'  Jawbreaker
                                     'tag_release'  Unfun
                                       'tag_title'  Busy
                                             'bpm'  121.337
                                    'search_title'  'busy':1
                                   'search_artist'  'jawbreaker':1
                                  'search_release'  'unfun':1
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'electronic':3 'generic':4 'or':5 'radio':6 'unsorted':7
                                    'search_combo'  '00poprockelectronic':4 '90s':5 'busy':1A 'electronic':6 'generic':7 'jawbreaker':2B 'or':8 'radio':9 'unfun':3C 'unsorted':10
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['punk', 'punk rock', 'emo', 'pop punk', 'indie']
                                        'tag_date'  1990
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620566814.795204  (2021-05-09 15:26:54)
                             'size'  4231234