======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '143'
                                          'artist'  'The Beach Boys'
                                     'text_people'  ''
                                         'release'  'The Best Of The Beach Boys'
                                           'title'  'Louie, Louie'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['surf', 'rock', 'pop', '60s', 'classic rock']"
                                     'discogstags'  "['rock', 'pop', 'rock & roll', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-pop-surf;rock-cppex'
                                             'bpm'  '128.495'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Best Of The Beach Boys'
'TBPM' (BPM (beats per minute))                     '128.495'
'TCON' (Content type, a.k.a. Genre)                 ['rock-pop-surf', 'rock-cppex']
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Louie, Louie'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Beach Boys'
'TRCK' (Track number/Position in set)               '9'
'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'                                  ['rock', 'pop', 'rock & roll', 'pop rock']
'TXXX:lastfmtags'                                   ['surf', 'rock', 'pop', '60s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.82 dB'
'TXXX:replaygain_track_peak'                        '0.634103'

========================== row from database ==========================
                                              'id'  1301870
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Beach Boys/MBZ;#The Beach Boys;#The Best of the Beach Boys;#09;#Louie, Louie.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  143
                                           'genre'  rock-pop-surf;rock-cppex
                                        'filesize'  2301006
                                           'mtime'  1636038771
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic MBZ;#The Boys;#The of the Boys;#09;#Louie, rock pop surf;rock cppex
                                      'tag_artist'  The Beach Boys
                                     'tag_release'  The Best Of The Beach Boys
                                       'tag_title'  Louie, Louie
                                             'bpm'  128.495
                                    'search_title'  'louie':1,2
                                   'search_artist'  'beach':2 'boys':3 'the':1
                                  'search_release'  'beach':4 'best':2 'boys':5 'of':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 '09':13,16 'boys':6,8,12,15 'cppex':24 'louie':14,17 'mbz':2,4 'of':10 'pop':19 'rock':18,21,23 'surf':20,22 'the':3,5,7,9,11
                                    'search_combo'  '00poprockelectronic':11 '09':23,26 'beach':4B,9C 'best':7C 'boys':5B,10C,16,18,22,25 'cppex':34 'louie':1A,2A,24,27 'mbz':12,14 'of':8C,20 'pop':29 'rock':28,31,33 'surf':30,32 'the':3B,6C,13,15,17,19,21
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['surf', 'rock', 'pop', '60s', 'classic rock']
                                        'tag_date'  1965
                                     'discogstags'  ['rock', 'pop', 'rock & roll', 'pop rock']

============================== file details ==============================
                                           'mtime'  1636038771.434756  (2021-11-04 16:12:51)
                             'size'  2301006