======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '136'
                                          'artist'  '101 Strings O.'
                                     'text_people'  ''
                                         'release'  'Easy Instr 70s'
                                           'title'  "Barrier X-69 (cit. 'The Boy I Left Behind' '69)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '123.2'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Easy Instr 70s'
'TBPM' (BPM (beats per minute))                     '123.2'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         "Barrier X-69 (cit. 'The Boy I Left Behind' '69)"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '101 Strings O.'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.15 dB'
'TXXX:replaygain_track_peak'                        '0.878696'

========================== row from database ==========================
                                              'id'  1526351
                                            'path'  /data/Music/Bulk/00popandrock-swing-funk-soul/EASY Instr 70_s/101 Strings O. - Barrier X-69 (cit. _The Boy I Left Behind_ _69).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  136
                                           'genre'  funk or soul
                                        'filesize'  2737249
                                           'mtime'  1628357785
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock swing funk soul EASY 70_s _The Behind_ _69) funk or soul
                                      'tag_artist'  101 Strings O.
                                     'tag_release'  Easy Instr 70s
                                       'tag_title'  Barrier X-69 (cit. 'The Boy I Left Behind' '69)
                                             'bpm'  123.2
                                    'search_title'  '69':3,14,15 'barrier':1 'behind':12,13 'boy':9 'cit':5,6 'i':10 'left':11 'the':7,8 'x':2 'x69':4
                                   'search_artist'  '101':1 'o':3,4 'strings':2
                                  'search_release'  '70s':3 'easy':1 'instr':2
                                     'search_rest'  '69':9,10 '70':5 'behind':8 'easy':4 'funk':2 'or':11 's':6 'soul':3 'swing':1 'the':7
                                    'search_combo'  '101':16B '69':3A,14A,15A,31,32 '70':27 '70s':22C 'barrier':1A 'behind':12A,13A,30 'boy':9A 'cit':5A,6A 'easy':20C,26 'funk':24 'i':10A 'instr':21C 'left':11A 'o':18B,19B 'or':33 's':28 'soul':25 'strings':17B 'swing':23 'the':7A,8A,29 'x':2A 'x69':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357785.3596957  (2021-08-07 19:36:25)
                             'size'  2737249