======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '206'
                                          'artist'  'Eddie Constantine'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Ich Wünsch' Dir Einen Schlaflosen Abend"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['reggae', 'all', 'roots']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '143.721'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '143.721'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         "Ich Wünsch' Dir Einen Schlaflosen Abend"
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eddie Constantine'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['reggae', 'all', 'roots']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.28 dB'
'TXXX:replaygain_track_peak'                        '0.473882'

========================== row from database ==========================
                                              'id'  1502522
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/Eddie Constantine - Ich Wünsch_ Dir Einen Schlaflosen Abend 1-12-1956.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  206
                                           'genre'  prerock-unsorted
                                        'filesize'  4138802
                                           'mtime'  1621696410
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 Wünsch_ 1 12 1956 prerock unsorted
                                      'tag_artist'  Eddie Constantine
                                     'tag_release'  None
                                       'tag_title'  Ich Wünsch' Dir Einen Schlaflosen Abend
                                             'bpm'  143.721
                                    'search_title'  'abend':9 'dir':6 'einen':7 'ich':1 'schlaflosen':8 'wunsch':2,3,4,5
                                   'search_artist'  'constantine':2 'eddie':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':9 '1956':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'unsorted':11 'wunsch':7,8
                                    'search_combo'  '00oldiepop':16 '1':20 '1956':17 'abend':9A 'constantine':11B 'country':15 'dir':6A 'eddie':10B 'einen':7A 'exotica':13 'ich':1A 'jazz':12 'oldies':14 'prerock':21 'schlaflosen':8A 'unsorted':22 'wunsch':2A,3A,4A,5A,18,19
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['reggae', 'all', 'roots']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696410.0390186  (2021-05-22 17:13:30)
                             'size'  4138802