======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '21'
                                          'artist'  'B-Grade Film Radio Spots/Teasers'
                                     'text_people'  ''
                                         'release'  'B-Grade Film Radio Spots/Teasers'
                                           'title'  'Zombie - Radio Spot #4'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', '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'  '16'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials-trailers;set-pl-mor'
                                             'bpm'  '99.812'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'B-Grade Film Radio Spots/Teasers'
'TBPM' (BPM (beats per minute))                     '99.812'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-commercials-trailers', 'set-pl-mor']
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Zombie - Radio Spot #4'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'B-Grade Film Radio Spots/Teasers'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.99 dB'
'TXXX:replaygain_track_peak'                        '0.594179'

========================== row from database ==========================
                                              'id'  957266
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/trailers/16 - Zombie Radio Spot #4.mp3
                                         'working'  None
                                         'bitrate'  321
                                    'duration_sec'  21
                                           'genre'  nonmusic-commercials-trailers;set-pl-mor
                                        'filesize'  881937
                                           'mtime'  1620527889
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv radio movietrailer trailers 16 nonmusic commercials trailers;set pl mor
                                      'tag_artist'  B-Grade Film Radio Spots/Teasers
                                     'tag_release'  B-Grade Film Radio Spots/Teasers
                                       'tag_title'  Zombie - Radio Spot #4
                                             'bpm'  99.812
                                    'search_title'  '4':4,5 'radio':2 'spot':3 'zombie':1
                                   'search_artist'  'b':1 'bgrade':3 'film':4 'grade':2 'radio':5 'spots':6 'spotsteasers':8 'teasers':7
                                  'search_release'  'b':1 'bgrade':3 'film':4 'grade':2 'radio':5 'spots':6 'spotsteasers':8 'teasers':7
                                     'search_rest'  '00commercials':2 '0nonmusic':1 'commercials':8 'mor':14 'movietrailer':5 'nonmusic':7 'pl':13 'radio':4 'set':10,12 'trailers':6,9,11 'tv':3
                                    'search_combo'  '00commercials':23 '0nonmusic':22 '4':4A,5A 'b':6B,14C 'bgrade':8B,16C 'commercials':29 'film':9B,17C 'grade':7B,15C 'mor':35 'movietrailer':26 'nonmusic':28 'pl':34 'radio':2A,10B,18C,25 'set':31,33 'spot':3A 'spots':11B,19C 'spotsteasers':13B,21C 'teasers':12B,20C 'trailers':27,30,32 'tv':24 'zombie':1A
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527889.479117  (2021-05-09 04:38:09)
                             'size'  881937