======================== unified (from filesystem) ========================
                                         'bitrate'  '181.85'
                                        'duration'  '526'
                                          'artist'  'Nils Frahm'
                                     'text_people'  ''
                                         'release'  'Wintermusik'
                                           'title'  'Nue'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'instrumental', 'piano', 'modern classical', "
 "'ambient']")
                                     'discogstags'  "['classical', 'neo-classical', 'post-modern']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments;electronic'
                                             'bpm'  '107.378'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Wintermusik'
'TBPM' (BPM (beats per minute))                     '107.378'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-classical or classical instruments', 'electronic']
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Nue'
'TKEY' (Initial key)                                '3A'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Nils Frahm'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['classical', 'neo-classical', 'post-modern']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'instrumental',
 'piano',
 'modern classical',
 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.27 dB'
'TXXX:replaygain_track_peak'                        '1.006338'

========================== row from database ==========================
                                              'id'  1343888
                                            'path'  /data/Music/Bulk/00poprockelectronic/Nils Frahm/Wintermusik/03-nils_frahm_-_nue-zzzz.mp3
                                         'working'  None
                                         'bitrate'  181
                                    'duration_sec'  526
                                           'genre'  prerock-classical or classical instruments;electronic
                                        'filesize'  11981390
                                           'mtime'  1636914248
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 03 nils_frahm_ _nue zzzz prerock classical or classical instruments;electronic
                                      'tag_artist'  Nils Frahm
                                     'tag_release'  Wintermusik
                                       'tag_title'  Nue
                                             'bpm'  107.378
                                    'search_title'  'nue':1
                                   'search_artist'  'frahm':2 'nils':1
                                  'search_release'  'wintermusik':1
                                     'search_rest'  '00poprockelectronic':1 'classical':7 'electronic':10,12 'frahm':3 'instruments':9,11 'nils':2 'nue':4 'or':8 'prerock':6 'zzzz':5
                                    'search_combo'  '00poprockelectronic':5 'classical':11 'electronic':14,16 'frahm':3B,7 'instruments':13,15 'nils':2B,6 'nue':1A,8 'or':12 'prerock':10 'wintermusik':4C 'zzzz':9
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'Q-PLAY-2', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['contemporary classical', 'instrumental', 'piano', 'modern classical', 'ambient']
                                        'tag_date'  2009
                                     'discogstags'  ['classical', 'neo-classical', 'post-modern']

============================== file details ==============================
                                           'mtime'  1636914248.3289387  (2021-11-14 19:24:08)
                             'size'  11981390