======================== unified (from filesystem) ========================
                                         'bitrate'  '170.961'
                                        'duration'  '128'
                                          'artist'  'Masato Nakamura'
                                     'text_people'  ''
                                         'release'  'Sonic the Hedgehog 2 OST'
                                           'title'  'Chemical Plant Zone'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['video game music', 'japanese', 'soundtrack', 'sonic', 'instrumental']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'soundtrack-game;electronic-we-beeps or chip or pico'
                                             'bpm'  '92.772'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sonic the Hedgehog 2 OST'
'TBPM' (BPM (beats per minute))                     '92.772'
'TCON' (Content type, a.k.a. Genre)                 ['soundtrack-game', 'electronic-we-beeps or chip or pico']
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Chemical Plant Zone'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Masato Nakamura'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['video game music', 'japanese', 'soundtrack', 'sonic', 'instrumental']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.33 dB'
'TXXX:replaygain_track_peak'                        '0.672892'

========================== row from database ==========================
                                              'id'  258371
                                            'path'  /data/Music/Bulk/0soundtrack/Masato Nakamura/Sonic the Hedgehog 2 OST/06 Chemical Plant Zone.mp3
                                         'working'  None
                                         'bitrate'  170
                                    'duration_sec'  128
                                           'genre'  soundtrack-game;electronic-we-beeps or chip or pico
                                        'filesize'  2750693
                                           'mtime'  1636911956
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack 06 soundtrack game;electronic we beeps or chip or pico
                                      'tag_artist'  Masato Nakamura
                                     'tag_release'  Sonic the Hedgehog 2 OST
                                       'tag_title'  Chemical Plant Zone
                                             'bpm'  92.772
                                    'search_title'  'chemical':1 'plant':2 'zone':3
                                   'search_artist'  'masato':1 'nakamura':2
                                  'search_release'  '2':4 'hedgehog':3 'ost':5 'sonic':1 'the':2
                                     'search_rest'  '0soundtrack':1 'beeps':8 'chip':10 'electronic':4,6 'game':3,5 'or':9 'pico':11 'soundtrack':2 'we':7
                                    'search_combo'  '0soundtrack':11 '2':9C 'beeps':18 'chemical':1A 'chip':20 'electronic':14,16 'game':13,15 'hedgehog':8C 'masato':4B 'nakamura':5B 'or':19 'ost':10C 'pico':21 'plant':2A 'sonic':6C 'soundtrack':12 'the':7C 'we':17 'zone':3A
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['video game music', 'japanese', 'soundtrack', 'sonic', 'instrumental']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911955.5360897  (2021-11-14 18:45:55)
                             'size'  2750693