======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '158'
                                          'artist'  'The Titans'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "The Tootin' Tutor (Class, 1959; wr. Mamie Thomas & Jeanne Vikki)"
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-2', 'Q-OLDST-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['pop', 'indonesia', 'surf', 'german', 'deutsch']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '121.337'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '121.337'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         "The Tootin' Tutor (Class, 1959; wr. Mamie Thomas & Jeanne Vikki)"
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Titans'
'TXXX:Mp3gain_minmax'                               '066,205'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'indonesia', 'surf', 'german', 'deutsch']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.34 dB'
'TXXX:replaygain_track_peak'                        '0.392055'

========================== row from database ==========================
                                              'id'  1501246
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Zimelis [Chow, Baby!]/The Titans - The Tootin_ Tutor (Class, 1959; wr. Mamie Thomas & Jeanne Vikki).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  158
                                           'genre'  set-th-novelty
                                        'filesize'  2533242
                                           'mtime'  1620343100
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Zimelis [Chow, Baby!] Tootin_ set th novelty
                                      'tag_artist'  The Titans
                                     'tag_release'  None
                                       'tag_title'  The Tootin' Tutor (Class, 1959; wr. Mamie Thomas & Jeanne Vikki)
                                             'bpm'  121.337
                                    'search_title'  '1959':7,8 'class':5,6 'jeanne':13 'mamie':11 'the':1 'thomas':12 'tootin':2,3 'tutor':4 'vikki':14,15 'wr':9,10
                                   'search_artist'  'the':1 'titans':2
                                  'search_release'  
                                     'search_rest'  'baby':8,9 'chow':6,7 'country':4 'exotica':2 'jazz':1 'novelty':13 'oldies':3 'set':11 'th':12 'tootin':10 'zimelis':5
                                    'search_combo'  '1959':7A,8A 'baby':25,26 'chow':23,24 'class':5A,6A 'country':21 'exotica':19 'jazz':18 'jeanne':13A 'mamie':11A 'novelty':30 'oldies':20 'set':28 'th':29 'the':1A,16B 'thomas':12A 'titans':17B 'tootin':2A,3A,27 'tutor':4A 'vikki':14A,15A 'wr':9A,10A 'zimelis':22
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'indonesia', 'surf', 'german', 'deutsch']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343100.1463442  (2021-05-07 01:18:20)
                             'size'  2533242