======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '197'
                                          'artist'  'DJ Isaac'
                                     'text_people'  ''
                                         'release'  'Hardstyle Tuc 2004 2nd Edition'
                                           'title'  'Backstage'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-JZFKS-1', "
 "'Q-LOCALNESS-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-4']")
                                      'lastfmtags'  "['hardcore', 'hardstyle', 'gabber', 'jumpstyle', 'techno']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-th-hardstyle'
                                             'bpm'  '145.059'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Hardstyle Tuc 2004 2nd Edition'
'TBPM' (BPM (beats per minute))                     '145.059'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-hardstyle'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'Backstage'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'DJ Isaac'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '2'
'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'                                   ['hardcore', 'hardstyle', 'gabber', 'jumpstyle', 'techno']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.46 dB'
'TXXX:replaygain_track_peak'                        '0.528016'

========================== row from database ==========================
                                              'id'  1404562
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Hardstyle - The Ultimate Collection vol.2 2004 cd1/08 Backstage.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  197
                                           'genre'  electronic-th-hardstyle
                                        'filesize'  4735404
                                           'mtime'  1620558608
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat The Ultimate Collection vol.2 cd1 08 electronic th hardstyle
                                      'tag_artist'  DJ Isaac
                                     'tag_release'  Hardstyle Tuc 2004 2nd Edition
                                       'tag_title'  Backstage
                                             'bpm'  145.059
                                    'search_title'  'backstage':1
                                   'search_artist'  'dj':1 'isaac':2
                                  'search_release'  '2004':3 '2nd':4 'edition':5 'hardstyle':1 'tuc':2
                                     'search_rest'  '00poprockelectronic':1 '2':9 'cd1':11 'collection':7 'dance':3 'electronic':12 'generic':2 'hardstyle':14 'th':13 'the':5 'trapbeat':4 'ultimate':6 'vol':8 'vol2':10
                                    'search_combo'  '00poprockelectronic':9 '2':17 '2004':6C '2nd':7C 'backstage':1A 'cd1':19 'collection':15 'dance':11 'dj':2B 'edition':8C 'electronic':20 'generic':10 'hardstyle':4C,22 'isaac':3B 'th':21 'the':13 'trapbeat':12 'tuc':5C 'ultimate':14 'vol':16 'vol2':18
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', '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-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['hardcore', 'hardstyle', 'gabber', 'jumpstyle', 'techno']
                                        'tag_date'  2004
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620558608.424168  (2021-05-09 13:10:08)
                             'size'  4735404