======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '157'
                                          'artist'  'Emerson Military Band'
                                     'text_people'  ''
                                         'release'  'Emerson  0947'
                                           'title'  "Everybody's Crazy ' bout The Doggone Blues"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1918'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '95.169'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Emerson  0947'
'TBPM' (BPM (beats per minute))                     '95.169'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1918'
'TIT2' (Title/songname/content description)         "Everybody's Crazy ' bout The Doggone Blues"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Emerson Military Band'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'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'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.06 dB'
'TXXX:replaygain_track_peak'                        '0.544339'

========================== row from database ==========================
                                              'id'  1520440
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1918/Emerson Military Band - Everybody_s Crazy _Bout The Doggone Blues -3-1918.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  157
                                           'genre'  prerock-unsorted
                                        'filesize'  3143474
                                           'mtime'  1621697817
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1918 Everybody_s _Bout 3 1918 prerock unsorted
                                      'tag_artist'  Emerson Military Band
                                     'tag_release'  Emerson  0947
                                       'tag_title'  Everybody's Crazy ' bout The Doggone Blues
                                             'bpm'  95.169
                                    'search_title'  'blues':8 'bout':5 'crazy':4 'doggone':7 'everybody':1 'everybodys':3 's':2 'the':6
                                   'search_artist'  'band':3 'emerson':1 'military':2
                                  'search_release'  '0947':2 'emerson':1
                                     'search_rest'  '00oldiepop':5 '1918':6 '3':10 'bout':9 'country':4 'everybody':7 'exotica':2 'jazz':1 'oldies':3 'prerock':11 's':8 'unsorted':12
                                    'search_combo'  '00oldiepop':18 '0947':13C '1918':19 '3':23 'band':11B 'blues':8A 'bout':5A,22 'country':17 'crazy':4A 'doggone':7A 'emerson':9B,12C 'everybody':1A,20 'everybodys':3A 'exotica':15 'jazz':14 'military':10B 'oldies':16 'prerock':24 's':2A,21 'the':6A 'unsorted':25
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', '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'  []
                                        'tag_date'  1918
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697817.253277  (2021-05-22 17:36:57)
                             'size'  3143474