======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '177'
                                          'artist'  'Ilse Werner'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Mein Herz Hat Heut' Premiere"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'female vocalists', 'oldies', 'myschlager']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1942'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;loc-eur-germany'
                                             'bpm'  '131.328'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '131.328'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'loc-eur-germany']
'TDRC' (Recording time)                             '1942'
'TIT2' (Title/songname/content description)         "Mein Herz Hat Heut' Premiere"
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ilse Werner'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['german', 'female vocalists', 'oldies', 'myschlager']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.48 dB'
'TXXX:replaygain_track_peak'                        '0.462161'

========================== row from database ==========================
                                              'id'  1517006
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1942/Ilse Werner - Mein Herz Hat Heut_ Premiere 1942.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  177
                                           'genre'  prerock-vocal;loc-eur-germany
                                        'filesize'  3557041
                                           'mtime'  1621627544
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1942 Heut_ 1942 prerock vocal;loc eur germany
                                      'tag_artist'  Ilse Werner
                                     'tag_release'  None
                                       'tag_title'  Mein Herz Hat Heut' Premiere
                                             'bpm'  131.328
                                    'search_title'  'hat':3 'herz':2 'heut':4,5 'mein':1 'premiere':6
                                   'search_artist'  'ilse':1 'werner':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1942':6 'country':4 'eur':13 'exotica':2 'germany':14 'heut':7 'jazz':1 'loc':10,12 'oldies':3 'prerock':8 'vocal':9,11
                                    'search_combo'  '00oldiepop':13 '1942':14 'country':12 'eur':21 'exotica':10 'germany':22 'hat':3A 'herz':2A 'heut':4A,5A,15 'ilse':7B 'jazz':9 'loc':18,20 'mein':1A 'oldies':11 'premiere':6A 'prerock':16 'vocal':17,19 'werner':8B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['german', 'female vocalists', 'oldies', 'myschlager']
                                        'tag_date'  1942
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627543.9912539  (2021-05-21 22:05:43)
                             'size'  3557041