======================== unified (from filesystem) ========================
                                         'bitrate'  '176.391'
                                        'duration'  '401'
                                          'artist'  'Lou Donaldson'
                                     'text_people'  ''
                                         'release'  'Blue Break Beats'
                                           'title'  "Who's Making Love"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blue note', 'jazz', 'saxophone', 'soul jazz', 'funk']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '135.728'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Blue Break Beats'
'TBPM' (BPM (beats per minute))                     '135.728'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TIT2' (Title/songname/content description)         "Who's Making Love"
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lou Donaldson'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['blue note', 'jazz', 'saxophone', 'soul jazz', 'funk']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.12 dB'
'TXXX:replaygain_track_peak'                        '0.832270'

========================== row from database ==========================
                                              'id'  1499037
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Blue Break Beats/Lou Donaldson - Who_s Making Love.mp3
                                         'working'  None
                                         'bitrate'  176
                                    'duration_sec'  401
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  8867031
                                           'mtime'  1620528287
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Who_s prerock jb jazz unsorted
                                      'tag_artist'  Lou Donaldson
                                     'tag_release'  Blue Break Beats
                                       'tag_title'  Who's Making Love
                                             'bpm'  135.728
                                    'search_title'  'love':5 'making':4 's':2 'who':1 'whos':3
                                   'search_artist'  'donaldson':2 'lou':1
                                  'search_release'  'beats':3 'blue':1 'break':2
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':8 'oldies':3 'prerock':7 's':6 'unsorted':9 'who':5
                                    'search_combo'  'beats':10C 'blue':8C 'break':9C 'country':14 'donaldson':7B 'exotica':12 'jazz':11 'jb':18 'lou':6B 'love':5A 'making':4A 'oldies':13 'prerock':17 's':2A,16 'unsorted':19 'who':1A,15 'whos':3A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['blue note', 'jazz', 'saxophone', 'soul jazz', 'funk']
                                        'tag_date'  
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620528287.2058516  (2021-05-09 04:44:47)
                             'size'  8867031