======================== unified (from filesystem) ========================
                                         'bitrate'  '320.003'
                                        'duration'  '317'
                                          'artist'  'Gene Ammons'
                                     'text_people'  'John Klenner/Sam M. Lewis'
                                         'release'  'radio jazz 13'
                                           'title'  'Just Friends'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-2', "
 "'Q-OLDST-2', 'Q-SYN-1', 'Q-BUSY-3', 'Q-GRIT-1', 'Q-PLAY-2', 'q-bass-2', "
 "'Q-CHART-2', 'q-drums-2', 'q-other-2', 'q-piano-4', 'q-vocals-1', "
 "'Q-MIXBEAT-1']")
                                      'lastfmtags'  "['jazz', 'saxophone', 'hard bop', 'swing', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1962'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '135.9'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'radio jazz 13'
'TBPM' (BPM (beats per minute))                     '135.9'
'TCOM' (Composer)                                   'John Klenner/Sam M. Lewis'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1962'
'TIT2' (Title/songname/content description)         'Just Friends'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Gene Ammons'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Prestige'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'saxophone', 'hard bop', 'swing', 'funk']
'TXXX:q-bass'                                       '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '4'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+5.38 dB'
'TXXX:replaygain_track_peak'                        '0.468439'

========================== row from database ==========================
                                              'id'  1482197
                                            'path'  /data/Music/Bulk/00poprockelectronic/radio jazz 13/Gene Ammons - just friends.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  317
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  12709145
                                           'mtime'  1620574513
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic just friends prerock jb unsorted
                                      'tag_artist'  Gene Ammons
                                     'tag_release'  radio jazz 13
                                       'tag_title'  Just Friends
                                             'bpm'  135.9
                                    'search_title'  'friends':2 'just':1
                                   'search_artist'  'ammons':2 'gene':1
                                  'search_release'  'jazz':2 'radio':1
                                     'search_rest'  '00poprockelectronic':1 'friends':3 'jb':5 'just':2 'prerock':4 'unsorted':6
                                    'search_combo'  '00poprockelectronic':7 'ammons':4B 'friends':2A,9 'gene':3B 'jazz':6C 'jb':11 'just':1A,8 'prerock':10 'radio':5C 'unsorted':12
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-4', 'Q-MIXBEAT-1', 'Q-OLDST-2', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-1', 'q-other-2', 'Q-BUSY-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-2']
                                      'lastfmtags'  ['jazz', 'saxophone', 'hard bop', 'swing', 'funk']
                                        'tag_date'  1962
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620574513.056379  (2021-05-09 17:35:13)
                             'size'  12709145