======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '224'
                                          'artist'  'Donna Summer'
                                     'text_people'  ''
                                         'release'  '100 No 1 Hits vol 2'
                                           'title'  'I feel love'
                                           'quals'  ("['Q-HAP-3', '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-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', '70s', 'female vocalists', 'pop', 'disco']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '125.704'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100 No 1 Hits vol 2'
'TBPM' (BPM (beats per minute))                     '125.704'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'I feel love'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Donna Summer'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '05'
'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:lastfmtags'                                   ['dance', '70s', 'female vocalists', 'pop', 'disco']
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.27 dB'
'TXXX:replaygain_track_peak'                        '0.560128'

========================== row from database ==========================
                                              'id'  1403287
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/100 No.1 Hits vol.2/100 No.1 Hits vol.2 cd 2/cd2 05 Donna Summer - I feel love.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  224
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  6284919
                                           'mtime'  1621695814
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat No.1 vol.2 No.1 vol.2 cd cd2 05 electronic generic or radio dance
                                      'tag_artist'  Donna Summer
                                     'tag_release'  100 No 1 Hits vol 2
                                       'tag_title'  I feel love
                                             'bpm'  125.704
                                    'search_title'  'feel':2 'i':1 'love':3
                                   'search_artist'  'donna':1 'summer':2
                                  'search_release'  '1':3 '100':1 '2':6 'hits':4 'no':2 'vol':5
                                     'search_rest'  '00poprockelectronic':1 '1':6 '2':9 'cd':11 'cd2':12 'dance':3 'electronic':13 'generic':2 'no':5 'no1':7 'or':14 'radio':15 'trapbeat':4 'vol':8 'vol2':10
                                    'search_combo'  '00poprockelectronic':12 '1':8C,17 '100':6C '2':11C,20 'cd':22 'cd2':23 'dance':14 'donna':4B 'electronic':24 'feel':2A 'generic':13 'hits':9C 'i':1A 'love':3A 'no':7C,16 'no1':18 'or':25 'radio':26 'summer':5B 'trapbeat':15 'vol':10C,19 'vol2':21
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  6A
                                           '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-3', 'q-grit-2']
                                      'lastfmtags'  ['dance', '70s', 'female vocalists', 'pop', 'disco']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695813.726641  (2021-05-22 17:03:33)
                             'size'  6284919