======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '160'
                                          'artist'  'Willy Berking'
                                     'text_people'  ''
                                         'release'  'Philips P 10217 R'
                                           'title'  'Hat Denn Das Mit Liebe Was Zu Tun'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1953'
                                        'comments'  ''
                                           'genre'  'loc-eur-germany'
                                             'bpm'  '125.083'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Philips P 10217 R'
'TBPM' (BPM (beats per minute))                     '125.083'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-germany'
'TDRC' (Recording time)                             '1953'
'TIT2' (Title/songname/content description)         'Hat Denn Das Mit Liebe Was Zu Tun'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Willy Berking'
'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'                                   ['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'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'                        '+1.05 dB'
'TXXX:replaygain_track_peak'                        '0.470230'

========================== row from database ==========================
                                              'id'  1451721
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1953/Willy Berking - Hat Denn Das Mit Liebe Was Zu Tun 1953.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  160
                                           'genre'  loc-eur-germany
                                        'filesize'  3206962
                                           'mtime'  1621627822
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1953 1953 loc eur germany
                                      'tag_artist'  Willy Berking
                                     'tag_release'  Philips P 10217 R
                                       'tag_title'  Hat Denn Das Mit Liebe Was Zu Tun
                                             'bpm'  125.083
                                    'search_title'  'das':3 'denn':2 'hat':1 'liebe':5 'mit':4 'tun':8 'was':6 'zu':7
                                   'search_artist'  'berking':2 'willy':1
                                  'search_release'  '10217':3 'p':2 'philips':1 'r':4
                                     'search_rest'  '00oldiepop':5 '1953':6 'country':4 'eur':8 'exotica':2 'germany':9 'jazz':1 'loc':7 'oldies':3
                                    'search_combo'  '00oldiepop':19 '10217':13C '1953':20 'berking':10B 'country':18 'das':3A 'denn':2A 'eur':22 'exotica':16 'germany':23 'hat':1A 'jazz':15 'liebe':5A 'loc':21 'mit':4A 'oldies':17 'p':12C 'philips':11C 'r':14C 'tun':8A 'was':6A 'willy':9B 'zu':7A
                                    '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']
                                        'tag_date'  1953
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627822.3747768  (2021-05-21 22:10:22)
                             'size'  3206962