======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '145'
                                          'artist'  'Glen Campbell'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1970'
                                           'title'  "It's Only Make Believe"
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic country', 'country', 'pop', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '99'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  ('electronic-generic or '
 'radio-unsorted;ifs-songwriter-pop;ifs-songwriter-folk;ifs-folk-pop;set-pl-billboard')
                                             'bpm'  '146.000'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1970'
'TBPM' (BPM (beats per minute))                     '146.000'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted',
 'ifs-songwriter-pop',
 'ifs-songwriter-folk',
 'ifs-folk-pop',
 'set-pl-billboard']
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         "It's Only Make Believe"
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Glen Campbell'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '99'
'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'                                   ['classic country', 'country', 'pop', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.32 dB'
'TXXX:replaygain_track_peak'                        '0.643968'

========================== row from database ==========================
                                              'id'  1501610
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1970/099 - Glen Campbell - It_s Only Make Believe.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  145
                                           'genre'  electronic-generic or radio-unsorted;ifs-songwriter-pop;ifs-songwriter-folk;ifs-folk-pop;set-pl-billboard
                                        'filesize'  2921463
                                           'mtime'  1642256361
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 099 It_s electronic generic or radio unsorted;ifs songwriter pop;ifs songwriter folk;ifs folk pop;set pl billboard
                                      'tag_artist'  Glen Campbell
                                     'tag_release'  Billboard Top Pop Singles of 1970
                                       'tag_title'  It's Only Make Believe
                                             'bpm'  146.0
                                    'search_title'  'believe':6 'it':1 'its':3 'make':5 'only':4 's':2
                                   'search_artist'  'campbell':2 'glen':1
                                  'search_release'  '1970':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':28 'electronic':5 'folk':18,20,22 'generic':6 'ifs':10,12,15,17,19,21 'it':3 'or':7 'pl':27 'pop':14,16,23,25 'radio':8 's':4 'set':24,26 'songwriter':13 'top100':2 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':15 '1970':14C 'believe':6A 'billboard':9C,42 'campbell':8B 'electronic':19 'folk':32,34,36 'generic':20 'glen':7B 'ifs':24,26,29,31,33,35 'it':1A,17 'its':3A 'make':5A 'of':13C 'only':4A 'or':21 'pl':41 'pop':11C,28,30,37,39 'radio':22 's':2A,18 'set':38,40 'singles':12C 'songwriter':27 'top':10C 'top100':16 'unsorted':23,25
                                    'tag_tracknum'  99
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']
                                      'lastfmtags'  ['classic country', 'country', 'pop', 'folk', 'singer songwriter']
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642256361.0066626  (2022-01-15 15:19:21)
                             'size'  2921463