======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '189'
                                          'artist'  'Carpenters'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'When I Fall In Love'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'female vocalists', 'pop', 'easy listening', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-squeaky'
                                             'bpm'  '135.004'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-squeaky'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'When I Fall In Love'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Carpenters'
'TXXX:Mp3gain_minmax'                               '113,179'
'TXXX:Mp3gain_undo'                                 '+001,+001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'female vocalists', 'pop', 'easy listening', '70s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.22 dB'
'TXXX:replaygain_track_peak'                        '0.770194'

========================== row from database ==========================
                                              'id'  1297507
                                            'path'  /data/Music/Bulk/00poprockelectronic/Carpenters/[1997] Love Songs/Carpenters - When I Fall In Love.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  189
                                           'genre'  electronic-generic or radio-squeaky
                                        'filesize'  4557729
                                           'mtime'  1622801113
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1997] Songs electronic generic or radio squeaky
                                      'tag_artist'  Carpenters
                                     'tag_release'  None
                                       'tag_title'  When I Fall In Love
                                             'bpm'  135.004
                                    'search_title'  'fall':3 'i':2 'in':4 'love':5 'when':1
                                   'search_artist'  'carpenters':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1997':2,3 'electronic':5 'generic':6 'or':7 'radio':8 'songs':4 'squeaky':9
                                    'search_combo'  '00poprockelectronic':7 '1997':8,9 'carpenters':6B 'electronic':11 'fall':3A 'generic':12 'i':2A 'in':4A 'love':5A 'or':13 'radio':14 'songs':10 'squeaky':15 'when':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'female vocalists', 'pop', 'easy listening', '70s']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622801113.4085593  (2021-06-04 12:05:13)
                             'size'  4557729