======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '4337'
                                          'artist'  'Dance Dance Revolution'
                                     'text_people'  ''
                                         'release'  'DDR 3rd Mix'
                                           'title'  '3rd Megamix (Revelation)'
                                           'quals'  ("['Q-HAP-4', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['video game music', 'ddr', 'game', 'dance']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-th-ent-eurobeat'
                                             'bpm'  '125.006'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'DDR 3rd Mix'
'TBPM' (BPM (beats per minute))                     '125.006'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-ent-eurobeat'
'TIT2' (Title/songname/content description)         '3rd Megamix (Revelation)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dance Dance Revolution'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['video game music', 'ddr', 'game', 'dance']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.31 dB'
'TXXX:replaygain_track_peak'                        '0.624183'

========================== row from database ==========================
                                              'id'  1405913
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Dance Dance Revolution/Dance Dance Revolution - 3rd Mix - Revelation.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  4337
                                           'genre'  electronic-th-ent-eurobeat
                                        'filesize'  69396616
                                           'mtime'  1620558397
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat electronic th ent eurobeat
                                      'tag_artist'  Dance Dance Revolution
                                     'tag_release'  DDR 3rd Mix
                                       'tag_title'  3rd Megamix (Revelation)
                                             'bpm'  125.006
                                    'search_title'  '3rd':1 'megamix':2 'revelation':3,4
                                   'search_artist'  'dance':1 'revolution':2
                                  'search_release'  '3rd':2 'ddr':1 'mix':3
                                     'search_rest'  '00poprockelectronic':1 'dance':3 'electronic':5 'ent':7 'eurobeat':8 'generic':2 'th':6 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':10 '3rd':1A,8C 'dance':5B,12 'ddr':7C 'electronic':14 'ent':16 'eurobeat':17 'generic':11 'megamix':2A 'mix':9C 'revelation':3A,4A 'revolution':6B 'th':15 'trapbeat':13
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['video game music', 'ddr', 'game', 'dance']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558397.4340017  (2021-05-09 13:06:37)
                             'size'  69396616