======================== unified (from filesystem) ========================
                                         'bitrate'  '164.901'
                                        'duration'  '152'
                                          'artist'  'Sam & Dave'
                                     'text_people'  ''
                                         'release'  'Best of'
                                           'title'  'Soul Man'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'funk', 'rhythm and blues', 'soul', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'funk or soul;set-pl-billboard'
                                             'bpm'  '113.010'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Best of'
'TBPM' (BPM (beats per minute))                     '113.010'
'TCON' (Content type, a.k.a. Genre)                 ['funk or soul', 'set-pl-billboard']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Soul Man'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sam & Dave'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'funk', 'rhythm and blues', 'soul', '60s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.732145'

========================== row from database ==========================
                                              'id'  1214633
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Soul/Sam & Dave - Soul Man.mp3
                                         'working'  None
                                         'bitrate'  164
                                    'duration_sec'  152
                                           'genre'  funk or soul;set-pl-billboard
                                        'filesize'  3150943
                                           'mtime'  1628357619
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country funk or soul;set pl billboard
                                      'tag_artist'  Sam & Dave
                                     'tag_release'  Best of
                                       'tag_title'  Soul Man
                                             'bpm'  113.01
                                    'search_title'  'man':2 'soul':1
                                   'search_artist'  'dave':2 'sam':1
                                  'search_release'  'best':1 'of':2
                                     'search_rest'  'billboard':12 'country':4 'exotica':2 'funk':5 'jazz':1 'oldies':3 'or':6 'pl':11 'set':8,10 'soul':7,9
                                    'search_combo'  'best':5C 'billboard':18 'country':10 'dave':4B 'exotica':8 'funk':11 'jazz':7 'man':2A 'of':6C 'oldies':9 'or':12 'pl':17 'sam':3B 'set':14,16 'soul':1A,13,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'funk', 'rhythm and blues', 'soul', '60s']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357619.4275715  (2021-08-07 19:33:39)
                             'size'  3150943