======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '144'
                                          'artist'  'The Nuggets'
                                     'text_people'  ''
                                         'release'  'Rarest of the rare, vol. 16 (Memories of days gone by)'
                                           'title'  'Popcorn baby'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['nuggs nugg']"
                                     'discogstags'  "['power pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '144.955'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Rarest of the rare, vol. 16 (Memories of days gone by)'
'TBPM' (BPM (beats per minute))                     '144.955'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TIT2' (Title/songname/content description)         'Popcorn baby'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Nuggets'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['power pop', 'rock']
'TXXX:lastfmtags'                                   'nuggs nugg'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.99 dB'
'TXXX:replaygain_track_peak'                        '0.409183'

========================== row from database ==========================
                                              'id'  979328
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/rarest of the rare vol 16 (memories of days gone by) fct mp556/10 - the nuggets - popcorn baby.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  144
                                           'genre'  rock-pop-early
                                        'filesize'  2381159
                                           'mtime'  1620736545
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country rarest (memories fct mp556 10 nuggets popcorn rock pop early
                                      'tag_artist'  The Nuggets
                                     'tag_release'  Rarest of the rare, vol. 16 (Memories of days gone by)
                                       'tag_title'  Popcorn baby
                                             'bpm'  144.955
                                    'search_title'  'baby':2 'popcorn':1
                                   'search_artist'  'nuggets':2 'the':1
                                  'search_release'  'by':12,13 'days':10 'gone':11 'memories':8,9 'of':2 'rare':4,5 'rarest':1 'the':3 'vol':6,7
                                     'search_rest'  'country':4 'early':14 'exotica':2 'fct':8 'jazz':1 'memories':6,7 'mp556':9 'nuggets':10 'oldies':3 'pop':13 'popcorn':11 'rarest':5 'rock':12
                                    'search_combo'  'baby':2A 'by':16C,17C 'country':21 'days':14C 'early':31 'exotica':19 'fct':25 'gone':15C 'jazz':18 'memories':12C,13C,23,24 'mp556':26 'nuggets':4B,27 'of':6C 'oldies':20 'pop':30 'popcorn':1A,28 'rare':8C,9C 'rarest':5C,22 'rock':29 'the':3B,7C 'vol':10C,11C
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['nuggs nugg']
                                        'tag_date'  
                                     'discogstags'  ['power pop', 'rock']

============================== file details ==============================
                                           'mtime'  1620736545.1383386  (2021-05-11 14:35:45)
                             'size'  2381159