======================== unified (from filesystem) ========================
                                         'bitrate'  '173.073'
                                        'duration'  '251'
                                          'artist'  'Skalpel'
                                     'text_people'  ''
                                         'release'  'Skalpel'
                                           'title'  'Theme From Behind the Curtain'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic', 'jazz', 'ninja tune', 'nu jazz', 'polish']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic'
                                             'bpm'  '133.8'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Skalpel'
'TBPM' (BPM (beats per minute))                     '133.8'
'TCON' (Content type, a.k.a. Genre)                 'electronic'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Theme From Behind the Curtain'
'TKEY' (Initial key)                                '10A'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Skalpel'
'TRCK' (Track number/Position in set)               '9'
'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:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronic', 'jazz', 'ninja tune', 'nu jazz', 'polish']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.10 dB'
'TXXX:replaygain_track_peak'                        '0.534930'

========================== row from database ==========================
                                              'id'  1377788
                                            'path'  /data/Music/Bulk/00poprockelectronic/00calmer/Skalpel - Skalpel (2004)/09-skalpel--theme_from_behind_the_curtain-sb.mp3
                                         'working'  None
                                         'bitrate'  173
                                    'duration_sec'  251
                                           'genre'  electronic
                                        'filesize'  5451854
                                           'mtime'  1636913419
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00calmer (2004) 09 skalpel theme_from_behind_the_curtain sb electronic
                                      'tag_artist'  Skalpel
                                     'tag_release'  Skalpel
                                       'tag_title'  Theme From Behind the Curtain
                                             'bpm'  133.8
                                    'search_title'  'behind':3 'curtain':5 'from':2 'the':4 'theme':1
                                   'search_artist'  'skalpel':1
                                  'search_release'  'skalpel':1
                                     'search_rest'  '00calmer':2 '00poprockelectronic':1 '2004':3,4 'behind':8 'curtain':10 'electronic':12 'from':7 'sb':11 'skalpel':5 'the':9 'theme':6
                                    'search_combo'  '00calmer':9 '00poprockelectronic':8 '2004':10,11 'behind':3A,15 'curtain':5A,17 'electronic':19 'from':2A,14 'sb':18 'skalpel':6B,7C,12 'the':4A,16 'theme':1A,13
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', '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'  ['electronic', 'jazz', 'ninja tune', 'nu jazz', 'polish']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636913419.4098377  (2021-11-14 19:10:19)
                             'size'  5451854