======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '209'
                                          'artist'  'Clemens Eduard Haipl'
                                     'text_people'  ''
                                         'release'  '330rawson'
                                           'title'  'Sun'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['test']"
                                     'discogstags'  "['electronic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '120.0'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '330rawson'
'TBPM' (BPM (beats per minute))                     '120.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Sun'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Clemens Eduard Haipl'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'ambient']
'TXXX:lastfmtags'                                   'test'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.62 dB'
'TXXX:replaygain_track_peak'                        '0.528422'

========================== row from database ==========================
                                              'id'  724387
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Comfort Stand/csr053/csr053_clemens-eduard-haipl_10_sun.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  209
                                           'genre'  electronic-unsorted
                                        'filesize'  5039698
                                           'mtime'  1637784967
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Comfort Stand csr053 csr053_clemens eduard haipl_10_sun electronic unsorted
                                      'tag_artist'  Clemens Eduard Haipl
                                     'tag_release'  330rawson
                                       'tag_title'  Sun
                                             'bpm'  120.0
                                    'search_title'  'sun':1
                                   'search_artist'  'clemens':1 'eduard':2 'haipl':3
                                  'search_release'  '330rawson':1
                                     'search_rest'  '10':8 'clemens':5 'comfort':1 'csr053':3,4 'eduard':6 'electronic':10 'haipl':7 'stand':2 'sun':9 'unsorted':11
                                    'search_combo'  '10':13 '330rawson':5C 'clemens':2B,10 'comfort':6 'csr053':8,9 'eduard':3B,11 'electronic':15 'haipl':4B,12 'stand':7 'sun':1A,14 'unsorted':16
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['test']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic', 'ambient']

============================== file details ==============================
                                           'mtime'  1637784966.9843743  (2021-11-24 21:16:06)
                             'size'  5039698