======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '161'
                                          'artist'  'Hamilton, Joe Frank & Reynolds'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1971'
                                           'title'  "Don't Pull Your Love"
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'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'  "['70s', 'soft rock', 'classic rock', 'rock', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '42'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '100.805'
                                             'key'  '10B'
                                        '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))                     '100.805'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         "Don't Pull Your Love"
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Hamilton, Joe Frank & Reynolds'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '42'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['70s', 'soft rock', 'classic rock', 'rock', 'folk']
'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'                        '+1.39 dB'
'TXXX:replaygain_track_peak'                        '0.584618'

========================== row from database ==========================
                                              'id'  1500340
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1971/042 - Hamilton, Joe Frank & Reynolds - Don_t Pull Your Love.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  161
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3233196
                                           'mtime'  1620384979
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 042 Don_t electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Hamilton, Joe Frank & Reynolds
                                     'tag_release'  Billboard Top Pop Singles of 1971
                                       'tag_title'  Don't Pull Your Love
                                             'bpm'  100.805
                                    'search_title'  'don':1 'dont':3 'love':6 'pull':4 't':2 'your':5
                                   'search_artist'  'frank':4 'hamilton':1,2 'joe':3 'reynolds':5
                                  'search_release'  '1971':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':14 'don':3 'electronic':5 'generic':6 'or':7 'pl':13 'radio':8 'set':10,12 't':4 'top100':2 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':18 '1971':17C 'billboard':12C,31 'don':1A,20 'dont':3A 'electronic':22 'frank':10B 'generic':23 'hamilton':7B,8B 'joe':9B 'love':6A 'of':16C 'or':24 'pl':30 'pop':14C 'pull':4A 'radio':25 'reynolds':11B 'set':27,29 'singles':15C 't':2A,21 'top':13C 'top100':19 'unsorted':26,28 'your':5A
                                    'tag_tracknum'  42
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['70s', 'soft rock', 'classic rock', 'rock', 'folk']
                                        'tag_date'  1971
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620384978.912742  (2021-05-07 12:56:18)
                             'size'  3233196