======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '4522'
                                          'artist'  'Underworld'
                                     'text_people'  ''
                                         'release'  'Everything Everything'
                                           'title'  'Everything Everything (Entire)'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-1', 'q-syn-4', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['electronica', 'dance', 'techno', 'electronic', 'trance']"
                                     'discogstags'  "['electronic', 'techno', 'tech house', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno;electronic-th-trance'
                                             'bpm'  '139.851'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Live Show'
'TALB' (Album/Movie/Show title)                     'Everything Everything'
'TBPM' (BPM (beats per minute))                     '139.851'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-th-techno', 'electronic-th-trance']
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Everything Everything (Entire)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Underworld'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'techno', 'tech house', 'ambient']
'TXXX:lastfmtags'                                   ['electronica', 'dance', 'techno', 'electronic', 'trance']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.46 dB'
'TXXX:replaygain_track_peak'                        '0.553872'

========================== row from database ==========================
                                              'id'  1340237
                                            'path'  /data/Music/Bulk/00poprockelectronic/Underworld/Underworld - Everything everything (entire).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  4522
                                           'genre'  electronic-th-techno;electronic-th-trance
                                        'filesize'  108533166
                                           'mtime'  1620572466
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic everything (entire) electronic techno;electronic trance
                                      'tag_artist'  Underworld
                                     'tag_release'  Everything Everything
                                       'tag_title'  Everything Everything (Entire)
                                             'bpm'  139.851
                                    'search_title'  'entire':2,3 'everything':1
                                   'search_artist'  'underworld':1
                                  'search_release'  'everything':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':5,7,9 'entire':3,4 'everything':2 'techno':6,8 'trance':10
                                    'search_combo'  '00poprockelectronic':6 'electronic':10,12,14 'entire':2A,3A,8,9 'everything':1A,5C,7 'techno':11,13 'trance':15 'underworld':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-3', 'q-syn-4', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'dance', 'techno', 'electronic', 'trance']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic', 'techno', 'tech house', 'ambient']

============================== file details ==============================
                                           'mtime'  1620572465.9523056  (2021-05-09 17:01:05)
                             'size'  108533166