======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '343'
                                          'artist'  'Earth, Wind and Fire'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  "That's The Way Of The World"
                                           'quals'  ("['Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['funk', 'soul', 'disco', '70s', 'rnb']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '59'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '109.943'
                                             'key'  '3A'
                                        '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))                     '109.943'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         "That's The Way Of The World"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Earth, Wind and Fire'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '59'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['funk', 'soul', 'disco', '70s', 'rnb']
'TXXX:q-bass'                                       '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.52 dB'
'TXXX:replaygain_track_peak'                        '0.486464'

========================== row from database ==========================
                                              'id'  1519139
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1975/059 - Earth, Wind & Fire - That_s The Way Of The World.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  343
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  6872515
                                           'mtime'  1620567816
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1975 059 & That_s electronic generic radio unsorted
                                      'tag_artist'  Earth, Wind and Fire
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  That's The Way Of The World
                                             'bpm'  109.943
                                    'search_title'  'of':6 's':2 'that':1 'thats':3 'the':4 'way':5 'world':7
                                   'search_artist'  'and':4 'earth':1,2 'fire':5 'wind':3
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1975':3 'electronic':6 'generic':7 'radio':8 's':5 'that':4 'top100':2 'unsorted':9
                                    'search_combo'  '00poprockelectronic':19 '1':18C '1975':21 'and':11B 'billboard':13C 'earth':8B,9B 'electronic':24 'fire':12B 'generic':25 'of':6A,17C 'pop':15C 'radio':26 's':2A,23 'singles':16C 'that':1A,22 'thats':3A 'the':4A 'top':14C 'top100':20 'unsorted':27 'way':5A 'wind':10B 'world':7A
                                    'tag_tracknum'  59
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['funk', 'soul', 'disco', '70s', 'rnb']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620567816.1877265  (2021-05-09 15:43:36)
                             'size'  6872515