======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '177'
                                          'artist'  'Boswell Sisters'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Why Don't You Practise What You Preach"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', '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'  "['jazz', 'female vocalists', '1930s', 'big band', '30s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '121.555'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '121.555'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         "Why Don't You Practise What You Preach"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Boswell Sisters'
'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'                                   ['jazz', 'female vocalists', '1930s', 'big band', '30s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'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'                        '+3.09 dB'
'TXXX:replaygain_track_peak'                        '0.601958'

========================== row from database ==========================
                                              'id'  1501605
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/Boswell Sisters - Why Don_t You Practise What You Preach 21-6-1934.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  177
                                           'genre'  prerock-vocal
                                        'filesize'  3553074
                                           'mtime'  1620666433
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 Don_t 21 6 1934 prerock vocal
                                      'tag_artist'  Boswell Sisters
                                     'tag_release'  None
                                       'tag_title'  Why Don't You Practise What You Preach
                                             'bpm'  121.555
                                    'search_title'  'don':2 'dont':4 'practise':6 'preach':8 't':3 'what':7 'why':1 'you':5
                                   'search_artist'  'boswell':1 'sisters':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1934':6 '21':9 '6':10 'country':4 'don':7 'exotica':2 'jazz':1 'oldies':3 'prerock':11 't':8 'vocal':12
                                    'search_combo'  '00oldiepop':15 '1934':16 '21':19 '6':20 'boswell':9B 'country':14 'don':2A,17 'dont':4A 'exotica':12 'jazz':11 'oldies':13 'practise':6A 'preach':8A 'prerock':21 'sisters':10B 't':3A,18 'vocal':22 'what':7A 'why':1A 'you':5A
                                    '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'female vocalists', '1930s', 'big band', '30s']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666432.705609  (2021-05-10 19:07:12)
                             'size'  3553074