======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '175'
                                          'artist'  'Peter Kreuder'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Let's Call The Whole Thing Off (Solisten)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  "['20th century', 'edhits', 'german austrian composer', '50s', 'myhitparade']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1937'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '88.1'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '88.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1937-11'
'TIT2' (Title/songname/content description)         "Let's Call The Whole Thing Off (Solisten)"
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '175000'
'TPE1' (Lead performer(s)/Soloist(s))               'Peter Kreuder'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['20th century', 'edhits', 'german austrian composer', '50s', 'myhitparade']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.61 dB'
'TXXX:replaygain_track_peak'                        '0.657098'

========================== row from database ==========================
                                              'id'  1517008
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1937/Peter Kreuder - Let_s Call The Whole Thing Off (Solisten) -11-1937.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  175
                                           'genre'  prerock-band
                                        'filesize'  3559238
                                           'mtime'  1620560581
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1937 Let_s 11 1937 prerock band
                                      'tag_artist'  Peter Kreuder
                                     'tag_release'  None
                                       'tag_title'  Let's Call The Whole Thing Off (Solisten)
                                             'bpm'  88.1
                                    'search_title'  'call':4 'let':1 'lets':3 'off':8 's':2 'solisten':9,10 'the':5 'thing':7 'whole':6
                                   'search_artist'  'kreuder':2 'peter':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1937':6 'band':10 'country':4 'exotica':2 'jazz':1 'let':7 'oldies':3 'prerock':9 's':8
                                    'search_combo'  '00oldiepop':17 '1937':18 'band':22 'call':4A 'country':16 'exotica':14 'jazz':13 'kreuder':12B 'let':1A,19 'lets':3A 'off':8A 'oldies':15 'peter':11B 'prerock':21 's':2A,20 'solisten':9A,10A 'the':5A 'thing':7A 'whole':6A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['20th century', 'edhits', 'german austrian composer', '50s', 'myhitparade']
                                        'tag_date'  1937
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560580.8890479  (2021-05-09 13:43:00)
                             'size'  3559238