======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '201'
                                          'artist'  'Harry Nilsson'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1971'
                                           'title'  "Can't Live if Living Is Without You"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'classic rock', 'pop', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  ('electronic-generic or '
 'radio-unsorted;ifs-songwriter-pop;rock-cppex;ifs-songwriter-folk;ifs-songwriter-rock;ifs-folk-pop;set-pl-billboard')
                                             'bpm'  '128.904'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1971'
'TBPM' (BPM (beats per minute))                     '128.904'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted',
 'ifs-songwriter-pop',
 'rock-cppex',
 'ifs-songwriter-folk',
 'ifs-songwriter-rock',
 'ifs-folk-pop',
 'rock-cppex',
 'ifs-songwriter-rock',
 'set-pl-billboard']
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         "Can't Live if Living Is Without You"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Harry Nilsson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock', 'classic rock', 'pop', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.72 dB'
'TXXX:replaygain_track_peak'                        '0.571123'

========================== row from database ==========================
                                              'id'  1500341
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1972/004 - Harry Nilsson - Can_t Live if Living Is Without You.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  201
                                           'genre'  electronic-generic or radio-unsorted;ifs-songwriter-pop;rock-cppex;ifs-songwriter-folk;ifs-songwriter-rock;ifs-folk-pop;set-pl-billboard
                                        'filesize'  4029714
                                           'mtime'  1642256592
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1972 004 Can_t electronic generic or radio unsorted;ifs songwriter pop;rock cppex;ifs songwriter folk;ifs songwriter rock;ifs folk pop;set pl billboard
                                      'tag_artist'  Harry Nilsson
                                     'tag_release'  Billboard Top Pop Singles of 1971
                                       'tag_title'  Can't Live if Living Is Without You
                                             'bpm'  128.904
                                    'search_title'  'can':1 'cant':3 'if':5 'is':7 'live':4 'living':6 't':2 'without':8 'you':9
                                   'search_artist'  'harry':1 'nilsson':2
                                  'search_release'  '1971':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1972':3 'billboard':37 'can':4 'cppex':19,21 'electronic':6 'folk':23,25,31 'generic':7 'ifs':11,13,20,22,24,26,28,30 'or':8 'pl':36 'pop':15,17,32,34 'radio':9 'rock':16,18,27,29 'set':33,35 'songwriter':14 't':5 'top100':2 'unsorted':10,12
                                    'search_combo'  '00poprockelectronic':18 '1971':17C '1972':20 'billboard':12C,54 'can':1A,21 'cant':3A 'cppex':36,38 'electronic':23 'folk':40,42,48 'generic':24 'harry':10B 'if':5A 'ifs':28,30,37,39,41,43,45,47 'is':7A 'live':4A 'living':6A 'nilsson':11B 'of':16C 'or':25 'pl':53 'pop':14C,32,34,49,51 'radio':26 'rock':33,35,44,46 'set':50,52 'singles':15C 'songwriter':31 't':2A,22 'top':13C 'top100':19 'unsorted':27,29 'without':8A 'you':9A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']
                                      'lastfmtags'  ['rock', 'classic rock', 'pop', 'folk', 'singer songwriter']
                                        'tag_date'  1972
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642256592.0205178  (2022-01-15 15:23:12)
                             'size'  4029714