======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '178'
                                          'artist'  'The Beach Boys'
                                     'text_people'  ''
                                         'release'  'The Beach Boys 20 Golden Great'
                                           'title'  'Sloop John B'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'rock', 'pop', '60s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf;rock-cppex'
                                             'bpm'  '125.083'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Beach Boys 20 Golden Great'
'TBPM' (BPM (beats per minute))                     '125.083'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-surf', 'rock-cppex']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Sloop John B'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Beach Boys'
'TRCK' (Track number/Position in set)               '10'
'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', 'rock', 'pop', '60s', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.34 dB'
'TXXX:replaygain_track_peak'                        '0.624371'

========================== row from database ==========================
                                              'id'  1359503
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Beach Boys/MBZ;#The Beach Boys;#The Beach Boys 20 Golden Greats;#10;#Sloop John B.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  178
                                           'genre'  rock-pop-surf;rock-cppex
                                        'filesize'  4285815
                                           'mtime'  1636038771
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#The Boys;#The Greats;#10;#Sloop rock pop surf;rock cppex
                                      'tag_artist'  The Beach Boys
                                     'tag_release'  The Beach Boys 20 Golden Great
                                       'tag_title'  Sloop John B
                                             'bpm'  125.083
                                    'search_title'  'b':3 'john':2 'sloop':1
                                   'search_artist'  'beach':2 'boys':3 'the':1
                                  'search_release'  '20':4 'beach':2 'boys':3 'golden':5 'great':6 'the':1
                                     'search_rest'  '00poprockelectronic':1 '10':11,14 'boys':6,8 'cppex':22 'greats':10,13 'mbz':2,4 'pop':17 'rock':16,19,21 'sloop':12,15 'surf':18,20 'the':3,5,7,9
                                    'search_combo'  '00poprockelectronic':13 '10':23,26 '20':10C 'b':3A 'beach':5B,8C 'boys':6B,9C,18,20 'cppex':34 'golden':11C 'great':12C 'greats':22,25 'john':2A 'mbz':14,16 'pop':29 'rock':28,31,33 'sloop':1A,24,27 'surf':30,32 'the':4B,7C,15,17,19,21
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'rock', 'pop', '60s', 'classic rock']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636038771.1461728  (2021-11-04 16:12:51)
                             'size'  4285815