======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '120'
                                          'artist'  'Doris Dreww'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'French Fried Potatoes (& Ketchup)'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['illstreet', 'jazz vocal', 'jazz', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '144.955'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:Amadeus II 3.5:pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA'  PRIV(owner='Amadeus II 3.5', data=b'pdat\x00\x00\x00\x1cAHCGDGCHAAAAAAGAAACPPDAIAAAA')
'TBPM' (BPM (beats per minute))                     '144.955'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'French Fried Potatoes (& Ketchup)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Doris Dreww'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['illstreet', 'jazz vocal', 'jazz', '50s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.33 dB'
'TXXX:replaygain_track_peak'                        '0.675714'

========================== row from database ==========================
                                              'id'  765224
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/Doris Drew with Jack Fascinato & His Orch. - French Fried Potatoes And Ketchup (Ka-Hill (Des Plaines IL), 1957; wr. C. Watts, B. Trace & J. Fascinato).mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  120
                                           'genre'  set-th-novelty
                                        'filesize'  1449048
                                           'mtime'  1620343077
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] with Jack Fascinato His Orch. And (Ka Hill (Des Plaines IL), 1957; wr. C. Watts, B. Trace J. Fascinato) set th novelty
                                      'tag_artist'  Doris Dreww
                                     'tag_release'  None
                                       'tag_title'  French Fried Potatoes (& Ketchup)
                                             'bpm'  144.955
                                    'search_title'  'french':1 'fried':2 'ketchup':4,5 'potatoes':3
                                   'search_artist'  'doris':1 'dreww':2
                                  'search_release'  
                                     'search_rest'  '1957':25,26 'and':16 'b':33,34 'baby':8,9 'c':29,30 'chow':6,7 'country':4 'des':20,21 'exotica':2 'fascinato':12,38 'hill':19 'his':13 'il':23,24 'j':36,37 'jack':11 'jazz':1 'ka':17,18 'novelty':41 'oldies':3 'orch':14,15 'plaines':22 'set':39 'th':40 'trace':35 'watts':31,32 'with':10 'wr':27,28 'zimelis':5
                                    'search_combo'  '1957':32,33 'and':23 'b':40,41 'baby':15,16 'c':36,37 'chow':13,14 'country':11 'des':27,28 'doris':6B 'dreww':7B 'exotica':9 'fascinato':19,45 'french':1A 'fried':2A 'hill':26 'his':20 'il':30,31 'j':43,44 'jack':18 'jazz':8 'ka':24,25 'ketchup':4A,5A 'novelty':48 'oldies':10 'orch':21,22 'plaines':29 'potatoes':3A 'set':46 'th':47 'trace':42 'watts':38,39 'with':17 'wr':34,35 'zimelis':12
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['illstreet', 'jazz vocal', 'jazz', '50s']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343076.511169  (2021-05-07 01:17:56)
                             'size'  1449048