======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '272'
                                          'artist'  'Goran Bregović & Emir Kusturica'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Spij Kochanie, Spij (Kayah)'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '0'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '99.616'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '99.616'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'Spij Kochanie, Spij (Kayah)'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Goran Bregović & Emir Kusturica'
'TRCK' (Track number/Position in set)               '0'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.21 dB'
'TXXX:replaygain_track_peak'                        '0.500381'

========================== row from database ==========================
                                              'id'  1406364
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/Top 40/Goran Bregovic & Emir Kusturica - Spij Kochanie, Spij (Kayah).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  272
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  4362112
                                           'mtime'  1620645410
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat Top 40 Bregovic electronic generic radio dance
                                      'tag_artist'  Goran Bregović & Emir Kusturica
                                     'tag_release'  None
                                       'tag_title'  Spij Kochanie, Spij (Kayah)
                                             'bpm'  99.616
                                    'search_title'  'kayah':4,5 'kochanie':2,3 'spij':1
                                   'search_artist'  'bregovic':2,3 'emir':4 'goran':1 'kusturica':5
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '40':6 'bregovic':7 'dance':3 'electronic':8 'generic':2 'radio':9 'top':5 'trapbeat':4
                                    'search_combo'  '00poprockelectronic':11 '40':16 'bregovic':7B,8B,17 'dance':13 'electronic':18 'emir':9B 'generic':12 'goran':6B 'kayah':4A,5A 'kochanie':2A,3A 'kusturica':10B 'radio':19 'spij':1A 'top':15 'trapbeat':14
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-3', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620645410.1757324  (2021-05-10 13:16:50)
                             'size'  4362112