======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '170'
                                          'artist'  'Heino'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Aloha Oe'
                                           'quals'  ("['Q-UNU-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-1', 'q-chart-2', "
 "'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['german', 'deutsch', 'volksmusik', 'schlager']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'loc-eur-germany;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '142.910'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '142.910'
'TCON' (Content type, a.k.a. Genre)                 ['loc-eur-germany', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Aloha Oe'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Heino'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['german', 'deutsch', 'volksmusik', 'schlager']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.66 dB'
'TXXX:replaygain_track_peak'                        '0.620097'

========================== row from database ==========================
                                              'id'  1492157
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00german/Heino/Heino - Aloha Oe.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  170
                                           'genre'  loc-eur-germany;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  4089182
                                           'mtime'  1620347829
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00german loc eur germany;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Heino
                                     'tag_release'  None
                                       'tag_title'  Aloha Oe
                                             'bpm'  142.91
                                    'search_title'  'aloha':1 'oe':2
                                   'search_artist'  'heino':1
                                  'search_release'  
                                     'search_rest'  '00german':4 '00mid':1 'eur':6 'europe':3 'germany':7,9 'loc':5 'mor':16 'north':2 'pl':11 'set':8,10,13,15 'shirleyspinoza':12,14
                                    'search_combo'  '00german':7 '00mid':4 'aloha':1A 'eur':9 'europe':6 'germany':10,12 'heino':3B 'loc':8 'mor':19 'north':5 'oe':2A 'pl':14 'set':11,13,16,18 'shirleyspinoza':15,17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['german', 'deutsch', 'volksmusik', 'schlager']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620347828.8276  (2021-05-07 02:37:08)
                             'size'  4089182