======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '19'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Old BBC Radio Ads'
                                           'title'  'Old BBC Radio Ad 41'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '41'
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials'
                                             'bpm'  '132.444'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Old BBC Radio Ads'
'TBPM' (BPM (beats per minute))                     '132.444'
'TCON' (Content type, a.k.a. Genre)                 'nonmusic-commercials'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Old BBC Radio Ad 41'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TRCK' (Track number/Position in set)               '41'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.87 dB'
'TXXX:replaygain_track_peak'                        '0.340741'

========================== row from database ==========================
                                              'id'  957170
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/commercial_psa/Old BBC Radio Ad 41.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  19
                                           'genre'  nonmusic-commercials
                                        'filesize'  397119
                                           'mtime'  1620525016
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer commercial_psa nonmusic commercials
                                      'tag_artist'  [unknown]
                                     'tag_release'  Old BBC Radio Ads
                                       'tag_title'  Old BBC Radio Ad 41
                                             'bpm'  132.444
                                    'search_title'  '41':5 'ad':4 'bbc':2 'old':1 'radio':3
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'ads':4 'bbc':2 'old':1 'radio':3
                                     'search_rest'  '00commercials':2 '0nonmusic':1 'commercial':6 'commercials':9 'movietrailer':5 'nonmusic':8 'psa':7 'radio':4 'tv':3
                                    'search_combo'  '00commercials':13 '0nonmusic':12 '41':5A 'ad':4A 'ads':11C 'bbc':2A,9C 'commercial':17 'commercials':20 'movietrailer':16 'nonmusic':19 'old':1A,8C 'psa':18 'radio':3A,10C,15 'tv':14 'unknown':6B,7B
                                    'tag_tracknum'  41
                                      'num_images'  0
                                             'key'  1A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525016.2185469  (2021-05-09 03:50:16)
                             'size'  397119