======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '148'
                                          'artist'  'The Beach Boys'
                                     'text_people'  ''
                                         'release'  'Greatest Hits'
                                           'title'  "Surfin' Usa"
                                           '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-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'rock', 'pop', '60s', 'classic rock']"
                                     'discogstags'  "['pop', 'surf', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf;rock-cppex'
                                             'bpm'  '105.808'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '105.808'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-surf', 'rock-cppex']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         "Surfin' Usa"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Beach Boys'
'TRCK' (Track number/Position in set)               '11'
'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:discogstags'                                  ['pop', 'surf', 'pop rock']
'TXXX:lastfmtags'                                   ['surf', 'rock', 'pop', '60s', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '2'
'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'                        '+0.44 dB'
'TXXX:replaygain_track_peak'                        '0.430463'

========================== row from database ==========================
                                              'id'  1343022
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Beach Boys/MBZ;#The Beach Boys;#Greatest Hits;#11;#Surfin USA.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  148
                                           'genre'  rock-pop-surf;rock-cppex
                                        'filesize'  3571750
                                           'mtime'  1636038771
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#The Boys;#Greatest Hits;#11;#Surfin USA rock pop surf;rock cppex
                                      'tag_artist'  The Beach Boys
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Surfin' Usa
                                             'bpm'  105.808
                                    'search_title'  'surfin':1,2 'usa':3
                                   'search_artist'  'beach':2 'boys':3 'the':1
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00poprockelectronic':1 '11':11,14 'boys':6,8 'cppex':23 'greatest':7,9 'hits':10,13 'mbz':2,4 'pop':18 'rock':17,20,22 'surf':19,21 'surfin':12,15 'the':3,5 'usa':16
                                    'search_combo'  '00poprockelectronic':9 '11':19,22 'beach':5B 'boys':6B,14,16 'cppex':31 'greatest':7C,15,17 'hits':8C,18,21 'mbz':10,12 'pop':26 'rock':25,28,30 'surf':27,29 'surfin':1A,2A,20,23 'the':4B,11,13 'usa':3A,24
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  5B
                                           '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-2', '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'  ['pop', 'surf', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636038770.7203386  (2021-11-04 16:12:50)
                             'size'  3571750