======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '161'
                                          'artist'  'Chet Atkins'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Ain'tcha Tired Of Makin' Me Blue"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-3', '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-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'guitar virtuoso', 'country', 'jazz', 'guitar', 'acoustic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1947'
                                        'comments'  ''
                                           'genre'  'prerock-country'
                                             'bpm'  '115.130'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '115.130'
'TCON' (Content type, a.k.a. Genre)                 'prerock-country'
'TDRC' (Recording time)                             '1947'
'TIT2' (Title/songname/content description)         "Ain'tcha Tired Of Makin' Me Blue"
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Chet Atkins'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'guitar virtuoso', 'country', 'jazz', 'guitar', 'acoustic']
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.60 dB'
'TXXX:replaygain_track_peak'                        '0.555597'

========================== row from database ==========================
                                              'id'  1513285
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1947/Chet Atkins - Ain_tcha Tired Of Makin_ Me Blue 11-8-1947.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  161
                                           'genre'  prerock-country
                                        'filesize'  3231538
                                           'mtime'  1621627604
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1947 Ain_tcha Makin_ 11 8 1947 prerock country
                                      'tag_artist'  Chet Atkins
                                     'tag_release'  None
                                       'tag_title'  Ain'tcha Tired Of Makin' Me Blue
                                             'bpm'  115.13
                                    'search_title'  'ain':1 'aintcha':3 'blue':9 'makin':6,7 'me':8 'of':5 'tcha':2 'tired':4
                                   'search_artist'  'atkins':2 'chet':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1947':6 '8':10 'ain':7 'country':4 'exotica':2 'jazz':1 'makin':9 'oldies':3 'prerock':11 'tcha':8
                                    'search_combo'  '00oldiepop':16 '1947':17 '8':21 'ain':1A,18 'aintcha':3A 'atkins':11B 'blue':9A 'chet':10B 'country':15 'exotica':13 'jazz':12 'makin':6A,7A,20 'me':8A 'of':5A 'oldies':14 'prerock':22 'tcha':2A,19 'tired':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', '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'  ['instrumental', 'guitar virtuoso', 'country', 'jazz', 'guitar', 'acoustic']
                                        'tag_date'  1947
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627603.521121  (2021-05-21 22:06:43)
                             'size'  3231538