======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Fletcher Henderson'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Oh Eva (Ain't You Comin' Out Tonight)"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'ragtime', '20s', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1924'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '105.642'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '105.642'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1924'
'TIT2' (Title/songname/content description)         "Oh Eva (Ain't You Comin' Out Tonight)"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Fletcher Henderson'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'ragtime', '20s', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.21 dB'
'TXXX:replaygain_track_peak'                        '0.560601'

========================== row from database ==========================
                                              'id'  1505055
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1924/Fletcher Henderson - Oh Eva (Ain_t You Comin_ Out Tonight) -5-1924.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3532470
                                           'mtime'  1620525598
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1924 (Ain_t Comin_ 5 1924 prerock jb jazz unsorted
                                      'tag_artist'  Fletcher Henderson
                                     'tag_release'  None
                                       'tag_title'  Oh Eva (Ain't You Comin' Out Tonight)
                                             'bpm'  105.642
                                    'search_title'  'ain':3 'aint':5 'comin':7,8 'eva':2 'oh':1 'out':9 't':4 'tonight':10,11 'you':6
                                   'search_artist'  'fletcher':1 'henderson':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1924':6 '5':12 'ain':7,9 'comin':11 'country':4 'exotica':2 'jazz':1 'jb':14 'oldies':3 'prerock':13 't':8,10 'unsorted':15
                                    'search_combo'  '00oldiepop':18 '1924':19 '5':25 'ain':3A,20,22 'aint':5A 'comin':7A,8A,24 'country':17 'eva':2A 'exotica':15 'fletcher':12B 'henderson':13B 'jazz':14 'jb':27 'oh':1A 'oldies':16 'out':9A 'prerock':26 't':4A,21,23 'tonight':10A,11A 'unsorted':28 'you':6A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['big band', 'jazz', 'ragtime', '20s', 'swing']
                                        'tag_date'  1924
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525598.2351687  (2021-05-09 03:59:58)
                             'size'  3532470