======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '197'
                                          'artist'  'Tommy Dorsey'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Half-way Down The Street (vocal - Frank Sinatra)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['big bands of the 30s and 40s', 'jazz', 'big band', '40s', 'swing', "
 "'trombone']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '99.274'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '99.274'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1940'
'TIT2' (Title/songname/content description)         'Half-way Down The Street (vocal - Frank Sinatra)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tommy Dorsey'
'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:lastfmtags'                                   ['big bands of the 30s and 40s', 'jazz', 'big band', '40s', 'swing', 'trombone']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.43 dB'
'TXXX:replaygain_track_peak'                        '0.454800'

========================== row from database ==========================
                                              'id'  1435386
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1940/Tommy Dorsey - Half-Way Down The Street (vocal - Frank Sinatra) 20-7-1940.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  197
                                           'genre'  prerock-band
                                        'filesize'  3960626
                                           'mtime'  1620560846
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1940 Way 20 7 1940 prerock band
                                      'tag_artist'  Tommy Dorsey
                                     'tag_release'  None
                                       'tag_title'  Half-way Down The Street (vocal - Frank Sinatra)
                                             'bpm'  99.274
                                    'search_title'  'down':4 'frank':9 'half':1 'halfway':3 'sinatra':10,11 'street':6 'the':5 'vocal':7,8 'way':2
                                   'search_artist'  'dorsey':2 'tommy':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1940':6 '20':8 '7':9 'band':11 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'way':7
                                    'search_combo'  '00oldiepop':18 '1940':19 '20':21 '7':22 'band':24 'country':17 'dorsey':13B 'down':4A 'exotica':15 'frank':9A 'half':1A 'halfway':3A 'jazz':14 'oldies':16 'prerock':23 'sinatra':10A,11A 'street':6A 'the':5A 'tommy':12B 'vocal':7A,8A 'way':2A,20
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['big bands of the 30s and 40s', 'jazz', 'big band', '40s', 'swing', 'trombone']
                                        'tag_date'  1940
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560845.8176506  (2021-05-09 13:47:25)
                             'size'  3960626