======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '166'
                                          'artist'  'The Monkees'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "I'm A Believer"
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['oldies', 'rock', 'pop', '60s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '105.642'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '105.642'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         "I'm A Believer"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Monkees'
'TXXX:Mp3gain_minmax'                               '124,185'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'rock', 'pop', '60s', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.75 dB'
'TXXX:replaygain_track_peak'                        '0.368964'

========================== row from database ==========================
                                              'id'  1496077
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/The Monkees -  I_m A Believer.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  166
                                           'genre'  rock-cppex
                                        'filesize'  2670202
                                           'mtime'  1620737437
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] I_m rock cppex
                                      'tag_artist'  The Monkees
                                     'tag_release'  None
                                       'tag_title'  I'm A Believer
                                             'bpm'  105.642
                                    'search_title'  'a':4 'believer':5 'i':1 'im':3 'm':2
                                   'search_artist'  'monkees':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'cppex':10 'files':5,6 'i':7 'loose':3,4 'm':8 'rock':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':8 'a':4A 'believer':5A 'cppex':17 'files':12,13 'i':1A,14 'im':3A 'loose':10,11 'm':2A,15 'monkees':7B 'rock':16 'the':6B 'unsorted':9
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'rock', 'pop', '60s', 'classic rock']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737437.0352604  (2021-05-11 14:50:37)
                             'size'  2670202