======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '177'
                                          'artist'  'Max van Praag'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Oh Mama Mama'
                                           '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-2', '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'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;loc-eur-netherlands'
                                             'bpm'  '128.170'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '128.170'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'loc-eur-netherlands']
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         'Oh Mama Mama'
'TKEY' (Initial key)                                '7A'
'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'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.86 dB'
'TXXX:replaygain_track_peak'                        '0.572151'

========================== row from database ==========================
                                              'id'  1428108
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1950/Max van Praag - Oh Mama Mama 1950.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  177
                                           'genre'  prerock-vocal;loc-eur-netherlands
                                        'filesize'  3561266
                                           'mtime'  1621627707
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1950 1950 prerock vocal;loc eur netherlands
                                      'tag_artist'  Max van Praag
                                     'tag_release'  None
                                       'tag_title'  Oh Mama Mama
                                             'bpm'  128.17
                                    'search_title'  'mama':2 'oh':1
                                   'search_artist'  'max':1 'praag':3 'van':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1950':6 'country':4 'eur':12 'exotica':2 'jazz':1 'loc':9,11 'netherlands':13 'oldies':3 'prerock':7 'vocal':8,10
                                    'search_combo'  '00oldiepop':10 '1950':11 'country':9 'eur':17 'exotica':7 'jazz':6 'loc':14,16 'mama':2A 'max':3B 'netherlands':18 'oh':1A 'oldies':8 'praag':5B 'prerock':12 'van':4B 'vocal':13,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           '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-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['nederlandstalig', 'netherlands', 'nederlands', '60s', 'dutch']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627707.3168762  (2021-05-21 22:08:27)
                             'size'  3561266