======================== unified (from filesystem) ========================
                                         'bitrate'  '319.725'
                                        'duration'  '222'
                                          'artist'  'Tom Edwards'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'What Is A Teenage Boy'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '473'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '144.748'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '144.748'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'What Is A Teenage Boy'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Edwards'
'TRCK' (Track number/Position in set)               '473'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+12.03 dB'
'TXXX:replaygain_track_peak'                        '0.129102'

========================== row from database ==========================
                                              'id'  1447707
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-473 - Tom Edwards - What Is A Teenage Boy.mp3
                                         'working'  None
                                         'bitrate'  319
                                    'duration_sec'  222
                                           'genre'  prerock-unsorted
                                        'filesize'  8890624
                                           'mtime'  1621698351
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 473 prerock unsorted
                                      'tag_artist'  Tom Edwards
                                     'tag_release'  None
                                       'tag_title'  What Is A Teenage Boy
                                             'bpm'  144.748
                                    'search_title'  'a':3 'boy':5 'is':2 'teenage':4 'what':1
                                   'search_artist'  'edwards':2 'tom':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1957':6 '473':8 '57':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':12 '1957':13 '473':15 '57':14 'a':3A 'boy':5A 'country':11 'edwards':7B 'exotica':9 'is':2A 'jazz':8 'oldies':10 'prerock':16 'teenage':4A 'tom':6B 'unsorted':17 'what':1A
                                    'tag_tracknum'  473
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698351.1467383  (2021-05-22 17:45:51)
                             'size'  8890624