======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '178'
                                          'artist'  'Glen Campbell'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Name'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-UNU-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic country', 'country', 'pop', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '22'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  ('electronic-generic or '
 'radio-unsorted;ifs-songwriter-pop;ifs-songwriter-folk;ifs-folk-pop')
                                             'bpm'  '95.709'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1'
'TBPM' (BPM (beats per minute))                     '95.709'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted',
 'ifs-songwriter-pop',
 'ifs-songwriter-folk',
 'ifs-folk-pop']
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Name'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Glen Campbell'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '22'
'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'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.04 dB'
'TXXX:replaygain_track_peak'                        '0.870336'

========================== row from database ==========================
                                              'id'  1292716
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1977/022 - Glen Campbell - Southern Nights.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  178
                                           'genre'  electronic-generic or radio-unsorted;ifs-songwriter-pop;ifs-songwriter-folk;ifs-folk-pop
                                        'filesize'  3577098
                                           'mtime'  1642256378
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1977 022 Southern Nights electronic generic or radio unsorted;ifs songwriter pop;ifs songwriter folk;ifs folk pop
                                      'tag_artist'  Glen Campbell
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Name
                                             'bpm'  95.709
                                    'search_title'  'name':1
                                   'search_artist'  'campbell':2 'glen':1
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1977':3 'electronic':6 'folk':19,21,23 'generic':7 'ifs':11,13,16,18,20,22 'nights':5 'or':8 'pop':15,17,24 'radio':9 'songwriter':14 'southern':4 'top100':2 'unsorted':10,12
                                    'search_combo'  '00poprockelectronic':10 '1':9C '1977':12 'billboard':4C 'campbell':3B 'electronic':15 'folk':28,30,32 'generic':16 'glen':2B 'ifs':20,22,25,27,29,31 'name':1A 'nights':14 'of':8C 'or':17 'pop':6C,24,26,33 'radio':18 'singles':7C 'songwriter':23 'southern':13 'top':5C 'top100':11 'unsorted':19,21
                                    'tag_tracknum'  22
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['classic country', 'country', 'pop', 'folk', 'singer songwriter']
                                        'tag_date'  1977
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642256377.514185  (2022-01-15 15:19:37)
                             'size'  3577098