======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '194'
                                          'artist'  'Tanzwut'
                                     'text_people'  ''
                                         'release'  'Ihr Wolltet Spass'
                                           'title'  'Nein Nein'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['german', 'folk metal', 'industrial', 'medieval', 'mittelalter']"
                                     'discogstags'  "['electronic', 'rock', 'folk rock', 'industrial']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '02'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '139.9'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Ihr Wolltet Spass'
'TBPM' (BPM (beats per minute))                     '139.9'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Nein Nein'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tanzwut'
'TRCK' (Track number/Position in set)               '02'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'rock', 'folk rock', 'industrial']
'TXXX:lastfmtags'                                   ['german', 'folk metal', 'industrial', 'medieval', 'mittelalter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.341061'

========================== row from database ==========================
                                              'id'  1470451
                                            'path'  /data/Music/Bulk/00poprockelectronic/Tanzwut/Ihr Wolltet Spass/02-Nein Nein.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  194
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  4675518
                                           'mtime'  1620296960
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 02 eid ebm or industrial or darkwave
                                      'tag_artist'  Tanzwut
                                     'tag_release'  Ihr Wolltet Spass
                                       'tag_title'  Nein Nein
                                             'bpm'  139.9
                                    'search_title'  'nein':1
                                   'search_artist'  'tanzwut':1
                                  'search_release'  'ihr':1 'spass':3 'wolltet':2
                                     'search_rest'  '00poprockelectronic':1 'darkwave':6 'ebm':3 'eid':2 'industrial':5 'or':4
                                    'search_combo'  '00poprockelectronic':6 'darkwave':11 'ebm':8 'eid':7 'ihr':3C 'industrial':10 'nein':1A 'or':9 'spass':5C 'tanzwut':2B 'wolltet':4C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['german', 'folk metal', 'industrial', 'medieval', 'mittelalter']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic', 'rock', 'folk rock', 'industrial']

============================== file details ==============================
                                           'mtime'  1620296960.1584508  (2021-05-06 12:29:20)
                             'size'  4675518