======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '345'
                                          'artist'  'Mike Dearborn'
                                     'text_people'  ''
                                         'release'  'maleta  acid rave'
                                           'title'  'Living Dead'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'Q-GRIT-3', 'q-bass-1', 'q-drums-4', 'q-other-3', 'q-piano-1', "
 "'q-vocals-1', 'Q-SYN-4', 'Q-BUSY-3', 'Q-PLAY-2', 'Q-CHART-2', 'Q-MIXBEAT-3']")
                                      'lastfmtags'  "['techno', 'acid', 'house', 'acid house', 'deep house']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno-acid'
                                             'bpm'  '143.9'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'maleta  acid rave'
'TBPM' (BPM (beats per minute))                     '143.9'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno-acid'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Living Dead'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mike Dearborn'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:COMPILATION TITLE'                            'Techno'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '4'
'TXXX:Q-UNU'                                        '1'
'TXXX:STYLES'                                       'Techno'
'TXXX:added_timestamp'                              '129477031150156250'
'TXXX:discogstags'                                  'electronic'
'TXXX:first_played_timestamp'                       '129477131877500000'
'TXXX:last_played_timestamp'                        '129792497600000000'
'TXXX:lastfmtags'                                   ['techno', 'acid', 'house', 'acid house', 'deep house']
'TXXX:play_count'                                   '24'
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:rating'                                       '3'
'TXXX:replaygain_track_gain'                        '-0.56 dB'
'TXXX:replaygain_track_peak'                        '0.413135'
'USLT:Converted from Lyrics3 v2.00:XXX'             ' '

========================== row from database ==========================
                                              'id'  1483746
                                            'path'  /data/Music/Bulk/00poprockelectronic/maleta__ acid rave/mike dearborn - living dead.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  345
                                           'genre'  electronic-th-techno-acid
                                        'filesize'  14083767
                                           'mtime'  1620573792
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic maleta__ mike dearborn living dead electronic th techno
                                      'tag_artist'  Mike Dearborn
                                     'tag_release'  maleta  acid rave
                                       'tag_title'  Living Dead
                                             'bpm'  143.9
                                    'search_title'  'dead':2 'living':1
                                   'search_artist'  'dearborn':2 'mike':1
                                  'search_release'  'acid':2 'maleta':1 'rave':3
                                     'search_rest'  '00poprockelectronic':1 'dead':6 'dearborn':4 'electronic':7 'living':5 'maleta':2 'mike':3 'techno':9 'th':8
                                    'search_combo'  '00poprockelectronic':8 'acid':6C 'dead':2A,13 'dearborn':4B,11 'electronic':14 'living':1A,12 'maleta':5C,9 'mike':3B,10 'rave':7C 'techno':16 'th':15
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-3', 'Q-OLDST-3', 'Q-GRIT-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-4', 'Q-SYN-4', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1']
                                      'lastfmtags'  ['techno', 'acid', 'house', 'acid house', 'deep house']
                                        'tag_date'  1995
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620573792.4021823  (2021-05-09 17:23:12)
                             'size'  14083767