======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '169'
                                          'artist'  'Max van Praag'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Als Je Van Mij Zou Kunnen  Houden (rags To Riches)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-4', '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'  "['nederlandstalig', 'netherlands', 'nederlands', '60s', 'dutch']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;loc-eur-netherlands'
                                             'bpm'  '96.530'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '96.530'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'loc-eur-netherlands']
'TDRC' (Recording time)                             '1954'
'TIT2' (Title/songname/content description)         'Als Je Van Mij Zou Kunnen  Houden (rags To Riches)'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Max van Praag'
'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'                                   ['nederlandstalig', 'netherlands', 'nederlands', '60s', 'dutch']
'TXXX:q-bass'                                       '4'
'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'                        '+2.34 dB'
'TXXX:replaygain_track_peak'                        '0.554675'

========================== row from database ==========================
                                              'id'  1446136
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/Max van Praag - Als Je Van Mij Zou Kunnen  Houden (Rags To Riches) 1954.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  169
                                           'genre'  prerock-vocal;loc-eur-netherlands
                                        'filesize'  3383090
                                           'mtime'  1621627850
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 (Rags 1954 prerock vocal;loc eur netherlands
                                      'tag_artist'  Max van Praag
                                     'tag_release'  None
                                       'tag_title'  Als Je Van Mij Zou Kunnen  Houden (rags To Riches)
                                             'bpm'  96.53
                                    'search_title'  'als':1 'houden':7 'je':2 'kunnen':6 'mij':4 'rags':8,9 'riches':11,12 'to':10 'van':3 'zou':5
                                   'search_artist'  'max':1 'praag':3 'van':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1954':6 'country':4 'eur':14 'exotica':2 'jazz':1 'loc':11,13 'netherlands':15 'oldies':3 'prerock':9 'rags':7,8 'vocal':10,12
                                    'search_combo'  '00oldiepop':20 '1954':21 'als':1A 'country':19 'eur':29 'exotica':17 'houden':7A 'jazz':16 'je':2A 'kunnen':6A 'loc':26,28 'max':13B 'mij':4A 'netherlands':30 'oldies':18 'praag':15B 'prerock':24 'rags':8A,9A,22,23 'riches':11A,12A 'to':10A 'van':3A,14B 'vocal':25,27 'zou':5A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           '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-4', 'q-grit-1']
                                      'lastfmtags'  ['nederlandstalig', 'netherlands', 'nederlands', '60s', 'dutch']
                                        'tag_date'  1954
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627849.716833  (2021-05-21 22:10:49)
                             'size'  3383090