======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '184'
                                          'artist'  'Klaus Nomi & David Bowie'
                                     'text_people'  ''
                                         'release'  'Saturday Night Live'
                                           'title'  'The Man Who Sold The World (live 1979)'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-OLDST-3', 'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', "
 "'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['rock', 'glam rock', 'classic rock', '80s', '70s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1979'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '125.0'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Saturday Night Live'
'TBPM' (BPM (beats per minute))                     '125.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1979'
'TFLT' (File type)                                  '/3'
'TIT2' (Title/songname/content description)         'The Man Who Sold The World (live 1979)'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 '(CD/DD)'
'TPE1' (Lead performer(s)/Soloist(s))               'Klaus Nomi & David Bowie'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock', 'glam rock', 'classic rock', '80s', '70s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.20 dB'
'TXXX:replaygain_track_peak'                        '0.436176'

========================== row from database ==========================
                                              'id'  292175
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Klaus Nomi/Klaus Nomi - Rare Tracks/- The Man Who Sold The World (live 1979).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  184
                                           'genre'  electronic-unsorted
                                        'filesize'  3692350
                                           'mtime'  1620539084
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Rare Tracks electronic unsorted
                                      'tag_artist'  Klaus Nomi & David Bowie
                                     'tag_release'  Saturday Night Live
                                       'tag_title'  The Man Who Sold The World (live 1979)
                                             'bpm'  125.0
                                    'search_title'  '1979':8,9 'live':6,7 'man':2 'sold':4 'the':1 'who':3 'world':5
                                   'search_artist'  'bowie':4 'david':3 'klaus':1 'nomi':2
                                  'search_release'  'live':3 'night':2 'saturday':1
                                     'search_rest'  'electronic':3 'rare':1 'tracks':2 'unsorted':4
                                    'search_combo'  '1979':8A,9A 'bowie':13B 'david':12B 'electronic':19 'klaus':10B 'live':6A,7A,16C 'man':2A 'night':15C 'nomi':11B 'rare':17 'saturday':14C 'sold':4A 'the':1A 'tracks':18 'unsorted':20 'who':3A 'world':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-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'glam rock', 'classic rock', '80s', '70s']
                                        'tag_date'  1979
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620539084.4988854  (2021-05-09 07:44:44)
                             'size'  3692350