======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '30'
                                          'artist'  ''
                                     'text_people'  'Various Artists'
                                         'release'  'Exploitation radio trailers'
                                           'title'  'Framed ad 3'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'nonmusic-commercials-trailers;set-pl-mor'
                                             'bpm'  '87.144'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000087F 000000E7 00007B70'
'COMM:iTunNORM:eng'                                 (' 0000087F 000000E7 00007B70 000033DC 0000170F 0000284E 00005D8A 00006A51 '
 '000016C1 000016F5')
'COMM:iTunes_CDDB_1:eng'                            'BD0D1642+251420+66+150+26256+36266+36888+37402+47120+51615+55488+59402+61764+66355+68781+70848+72799+76905+80946+85538+90147+92448+96871+101313+105604+108035+110416+110871+115500+117998+122936+125261+129869+132297+137140+139767+144456+149333+153826+156462+158867+163551+166003+167079+171170+173352+178009+180374+184816+187283+191647+193895+195028+197622+200696+204275+207632+211116+214425+217553+220728+223454+226532+228921+233361+233931+238940+243653+246496'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '18'
'TALB' (Album/Movie/Show title)                     'Exploitation radio trailers'
'TBPM' (BPM (beats per minute))                     '87.144'
'TCOM' (Composer)                                   'Various Artists'
'TCON' (Content type, a.k.a. Genre)                 ['nonmusic-commercials-trailers', 'set-pl-mor']
'TDRC' (Recording time)                             '1970'
'TENC' (Encoded by)                                 'iTunes v3.0'
'TIT2' (Title/songname/content description)         'Framed ad 3'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Various Artists'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '18'
'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'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+1.76 dB'
'TXXX:replaygain_track_peak'                        '0.494761'

========================== row from database ==========================
                                              'id'  955103
                                            'path'  /data/Music/Bulk/0nonmusic/00commercials-tv-radio-movietrailer/trailers/18 Framed ad 3.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  30
                                           'genre'  nonmusic-commercials-trailers;set-pl-mor
                                        'filesize'  686276
                                           'mtime'  1620527890
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic 00commercials tv movietrailer 18 nonmusic commercials trailers;set mor
                                      'tag_artist'  None
                                     'tag_release'  Exploitation radio trailers
                                       'tag_title'  Framed ad 3
                                             'bpm'  87.144
                                    'search_title'  '3':3 'ad':2 'framed':1
                                   'search_artist'  None
                                  'search_release'  'exploitation':1 'radio':2 'trailers':3
                                     'search_rest'  '00commercials':2 '0nonmusic':1 '18':5 'commercials':7 'mor':12 'movietrailer':4 'nonmusic':6 'set':9,11 'trailers':8,10 'tv':3
                                    'search_combo'  '00commercials':8 '0nonmusic':7 '18':11 '3':3A 'ad':2A 'commercials':13 'exploitation':4C 'framed':1A 'mor':18 'movietrailer':10 'nonmusic':12 'radio':5C 'set':15,17 'trailers':6C,14,16 'tv':9
                                    'tag_tracknum'  18
                                      'num_images'  1
                                             'key'  7A
                                           '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-2', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527889.9665062  (2021-05-09 04:38:09)
                             'size'  686276