======================== unified (from filesystem) ========================
                                         'bitrate'  '165.123'
                                        'duration'  '390'
                                          'artist'  'The Chemical Brothers'
                                     'text_people'  'Tom Rowlands & Ed Simons'
                                         'release'  'Brotherhood [Bonus Disc]'
                                           'title'  'Electronic Battle Weapon 8 (Saturate)'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'electronica', 'techno', 'electronic', 'big beat']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '133.756'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Brotherhood [Bonus Disc]'
'TBPM' (BPM (beats per minute))                     '133.756'
'TCOM' (Composer)                                   'Tom Rowlands & Ed Simons'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'Electronic Battle Weapon 8 (Saturate)'
'TKEY' (Initial key)                                '3A'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'The Chemical Brothers'
'TPE2' (Band/orchestra/accompaniment)               'The Chemical Brothers'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'Emi U.K.'
'TRCK' (Track number/Position in set)               '8'
'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'                                   ['dance', 'electronica', 'techno', 'electronic', 'big beat']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.85 dB'
'TXXX:replaygain_track_peak'                        '0.350651'

========================== row from database ==========================
                                              'id'  1405635
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/The Chemical Brothers - Chemical Brothers/Brotherhood/Brotherhood (CD2)/2-08 Electonic Battle Weapon 08.mp3
                                         'working'  None
                                         'bitrate'  165
                                    'duration_sec'  390
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  8073224
                                           'mtime'  1621695885
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat (CD2) 2 08 Electonic 08 electronic generic or radio bigbeat
                                      'tag_artist'  The Chemical Brothers
                                     'tag_release'  Brotherhood [Bonus Disc]
                                       'tag_title'  Electronic Battle Weapon 8 (Saturate)
                                             'bpm'  133.756
                                    'search_title'  '8':4 'battle':2 'electronic':1 'saturate':5,6 'weapon':3
                                   'search_artist'  'brothers':3 'chemical':2 'the':1
                                  'search_release'  'bonus':2,3 'brotherhood':1 'disc':4,5
                                     'search_rest'  '00poprockelectronic':1 '2':7 'bigbeat':12 'cd2':5,6 'dance':3 'electonic':8 'electronic':9 'generic':2 'or':10 'radio':11 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':15 '2':21 '8':4A 'battle':2A 'bigbeat':26 'bonus':11C,12C 'brotherhood':10C 'brothers':9B 'cd2':19,20 'chemical':8B 'dance':17 'disc':13C,14C 'electonic':22 'electronic':1A,23 'generic':16 'or':24 'radio':25 'saturate':5A,6A 'the':7B 'trapbeat':18 'weapon':3A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'electronica', 'techno', 'electronic', 'big beat']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695885.2024496  (2021-05-22 17:04:45)
                             'size'  8073224