======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '68'
                                          'artist'  'Skeewiff'
                                     'text_people'  ''
                                         'release'  "It's All Gone"
                                           'title'  'Das Telephon Klingert'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-2', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-3']")
                                      'lastfmtags'  "['breakbeat', 'lounge', 'electronic', 'big beat', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '84.703'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "It's All Gone"
'TBPM' (BPM (beats per minute))                     '84.703'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Das Telephon Klingert'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Skeewiff'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['breakbeat', 'lounge', 'electronic', 'big beat', 'funk']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.65 dB'
'TXXX:replaygain_track_peak'                        '0.410793'

========================== row from database ==========================
                                              'id'  1526812
                                            'path'  /data/Music/Bulk/00poprockelectronic/Skeewiff/[2000] It_s All Gone/09 Das Telephon Klingert.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  68
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  1655887
                                           'mtime'  1620572094
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [2000] It_s 09 electronic generic or radio bigbeat
                                      'tag_artist'  Skeewiff
                                     'tag_release'  It's All Gone
                                       'tag_title'  Das Telephon Klingert
                                             'bpm'  84.703
                                    'search_title'  'das':1 'klingert':3 'telephon':2
                                   'search_artist'  'skeewiff':1
                                  'search_release'  'all':4 'gone':5 'it':1 'its':3 's':2
                                     'search_rest'  '00poprockelectronic':1 '2000':2,3 'bigbeat':10 'electronic':6 'generic':7 'it':4 'or':8 'radio':9 's':5
                                    'search_combo'  '00poprockelectronic':10 '2000':11,12 'all':8C 'bigbeat':19 'das':1A 'electronic':15 'generic':16 'gone':9C 'it':5C,13 'its':7C 'klingert':3A 'or':17 'radio':18 's':6C,14 'skeewiff':4B 'telephon':2A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['breakbeat', 'lounge', 'electronic', 'big beat', 'funk']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572094.4521043  (2021-05-09 16:54:54)
                             'size'  1655887