======================== unified (from filesystem) ========================
                                         'bitrate'  '141.861'
                                        'duration'  '105'
                                          'artist'  'Dick Dale'
                                     'text_people'  ''
                                         'release'  'Greatest Hits 1961-1976'
                                           'title'  'Night Rider'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'instrumental', 'classic rock', 'surf rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf'
                                             'bpm'  '132.704'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits 1961-1976'
'TBPM' (BPM (beats per minute))                     '132.704'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-surf'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Night Rider'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Dick Dale'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['surf', 'instrumental', 'classic rock', 'surf rock', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.35 dB'
'TXXX:replaygain_track_peak'                        '0.617575'

========================== row from database ==========================
                                              'id'  1420220
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Dick Dale and His Del-tones - Dick Dale/Dick Dale - Greatest Hits 1961-1976/Dick Dale - Greatest Hits 1961-1976 - 13 - Night Rider.mp3
                                         'working'  None
                                         'bitrate'  141
                                    'duration_sec'  105
                                           'genre'  rock-pop-surf
                                        'filesize'  1880430
                                           'mtime'  1620736299
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country and His Del tones 13 rock pop surf
                                      'tag_artist'  Dick Dale
                                     'tag_release'  Greatest Hits 1961-1976
                                       'tag_title'  Night Rider
                                             'bpm'  132.704
                                    'search_title'  'night':1 'rider':2
                                   'search_artist'  'dale':2 'dick':1
                                  'search_release'  '1961':3 '19611976':5 '1976':4 'greatest':1 'hits':2
                                     'search_rest'  'and':5 'country':4 'del':7 'exotica':2 'his':6 'jazz':1 'oldies':3 'pop':10 'rock':9 'surf':11 'tones':8
                                    'search_combo'  '1961':7C '19611976':9C '1976':8C 'and':14 'country':13 'dale':4B 'del':16 'dick':3B 'exotica':11 'greatest':5C 'his':15 'hits':6C 'jazz':10 'night':1A 'oldies':12 'pop':19 'rider':2A 'rock':18 'surf':20 'tones':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'instrumental', 'classic rock', 'surf rock', 'rock']
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736299.4514422  (2021-05-11 14:31:39)
                             'size'  1880430