======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '29'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  'Trailers'
                                           'title'  'return-of-the-living-dead 30'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials-trailers;set-pl-mor'
                                             'bpm'  '126.410'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Trailers'
'TBPM' (BPM (beats per minute))                     '126.410'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-commercials-trailers', 'set-pl-mor']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'return-of-the-living-dead 30'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.22 dB'
'TXXX:replaygain_track_peak'                        '0.497728'

========================== row from database ==========================
                                              'id'  955535
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/trailers/return-of-the-living-dead_30.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  29
                                           'genre'  nonmusic-commercials-trailers;set-pl-mor
                                        'filesize'  467081
                                           'mtime'  1620528166
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer trailers dead_30 nonmusic commercials trailers;set pl mor
                                      'tag_artist'  [unknown]
                                     'tag_release'  Trailers
                                       'tag_title'  return-of-the-living-dead 30
                                             'bpm'  126.41
                                    'search_title'  '30':7 'dead':5 'living':4 'of':2 'return':1 'returnofthelivingdead':6 'the':3
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'trailers':1
                                     'search_rest'  '00commercials':2 '0nonmusic':1 '30':8 'commercials':10 'dead':7 'mor':16 'movietrailer':5 'nonmusic':9 'pl':15 'radio':4 'set':12,14 'trailers':6,11,13 'tv':3
                                    'search_combo'  '00commercials':12 '0nonmusic':11 '30':7A,18 'commercials':20 'dead':5A,17 'living':4A 'mor':26 'movietrailer':15 'nonmusic':19 'of':2A 'pl':25 'radio':14 'return':1A 'returnofthelivingdead':6A 'set':22,24 'the':3A 'trailers':10C,16,21,23 'tv':13 'unknown':8B,9B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528165.5053432  (2021-05-09 04:42:45)
                             'size'  467081