======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '258'
                                          'artist'  'Jack with BBC Big Band'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Born Under a Bad Sign'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '140.335'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '140.335'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TIT2' (Title/songname/content description)         'Born Under a Bad Sign'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '258827'
'TPE1' (Lead performer(s)/Soloist(s))               'Jack with BBC Big Band'
'TRCK' (Track number/Position in set)               '05'
'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:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.46 dB'
'TXXX:replaygain_track_peak'                        '0.470824'

========================== row from database ==========================
                                              'id'  761082
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/jack with bbc big band - radio broadcast/05 Born Under a Bad Sign .mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  258
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  10356736
                                           'mtime'  1620537826
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country jack bbc big band radio broadcast 05 prerock jb jazz unsorted
                                      'tag_artist'  Jack with BBC Big Band
                                     'tag_release'  None
                                       'tag_title'  Born Under a Bad Sign
                                             'bpm'  140.335
                                    'search_title'  'a':3 'bad':4 'born':1 'sign':5 'under':2
                                   'search_artist'  'band':5 'bbc':3 'big':4 'jack':1 'with':2
                                  'search_release'  
                                     'search_rest'  'band':8 'bbc':6 'big':7 'broadcast':10 'country':4 'exotica':2 'jack':5 'jazz':1 'jb':12 'oldies':3 'prerock':11 'radio':9 'unsorted':13
                                    'search_combo'  'a':3A 'bad':4A 'band':10B,18 'bbc':8B,16 'big':9B,17 'born':1A 'broadcast':20 'country':14 'exotica':12 'jack':6B,15 'jazz':11 'jb':22 'oldies':13 'prerock':21 'radio':19 'sign':5A 'under':2A 'unsorted':23 'with':7B
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620537825.9093  (2021-05-09 07:23:45)
                             'size'  10356736