======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '194'
                                          'artist'  'Billie Holiday'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  'I Cried for You'
                                           'quals'  ("['Q-OLDST-1', 'Q-GRIT-2', 'Q-BUSY-2', 'q-bass-2', 'q-drums-1', 'q-other-4', "
 "'q-piano-2', 'q-vocals-3', 'Q-HAP-3', 'Q-SYN-1', 'Q-UNU-1', 'Q-PLAY-3', "
 "'Q-CHART-4', 'Q-JZFKS-3', 'Q-HHRNBTT-1', 'Q-MIXBEAT-1', 'Q-LOCALNESS-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb'
                                             'bpm'  '145.0'
                                             'key'  'F m'  (4A)
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '145.0'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb'
'TIT2' (Title/songname/content description)         'I Cried for You'
'TKEY' (Initial key)                                'F m'
'TPE1' (Lead performer(s)/Soloist(s))               'Billie Holiday'
'TRCK' (Track number/Position in set)               '3'
'TXXX:MusicBrainz Album Id'                         'c3129382-ef3b-462a-a60f-7a543fbd6614'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        'd59c4cda-11d9-48db-8bfe-b557ee602aed'
'TXXX:MusicBrainz TRM Id'                           'e66a7254-fb66-435f-9334-0f5469bc31e4'
'TXXX:MusicMagic Data'                              'AgEAA5N6i22WhZcXgWGaxVe5jyWBhYOe9wahTi/qgAG/woABmn0UULVigAHlj4ABgOikk7jR6mnb+oABgAG46QTH9QSAAaRRgAKAAYYrnD+jjILh+TVEZIchggeEz/xVphIgnoKFyOKHiZJEEp+4QoWo0sGJMYPElJ+6fb6x07uVc4BCwF4HuulDuK2l0IK5gCQ='
'TXXX:MusicMagic Fingerprint'                       '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'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '4'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:http://www.foosic.org/'                       '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'
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.01 dB'
'TXXX:replaygain_track_peak'                        '0.559463'

========================== row from database ==========================
                                              'id'  1495131
                                            'path'  /data/Music/Other/Pa/Swing/Billie  Holiday/I Cried for You (Billie Holiday, Greatest Hits).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  194
                                           'genre'  prerock-jb
                                        'filesize'  3890574
                                           'mtime'  1621427977
                                   'redo_metaread'  0
                                        'rest_str'   Pa Swing (Billie Holiday, Hits) prerock jb
                                      'tag_artist'  Billie Holiday
                                     'tag_release'  Greatest Hits
                                       'tag_title'  I Cried for You
                                             'bpm'  145.0
                                    'search_title'  'cried':2 'for':3 'i':1 'you':4
                                   'search_artist'  'billie':1 'holiday':2
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  'billie':3,4 'hits':7,8 'holiday':5,6 'jb':10 'pa':1 'prerock':9 'swing':2
                                    'search_combo'  'billie':5B,11,12 'cried':2A 'for':3A 'greatest':7C 'hits':8C,15,16 'holiday':6B,13,14 'i':1A 'jb':18 'pa':9 'prerock':17 'swing':10 'you':4A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  F m
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-2', 'Q-MIXBEAT-1', 'Q-OLDST-1', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-CHART-4', 'q-drums-1', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621427976.8900878  (2021-05-19 14:39:36)
                             'size'  3890574