======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '282'
                                          'artist'  'R. Kelly'
                                     'text_people'  ''
                                         'release'  "100 Hits Of The 90'S"
                                           'title'  'I Believe I Can Fly (Radio Edit)  '
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-OLDST-3', 'Q-UNU-1', "
 "'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-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['rnb', 'soul', 'rap', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '81'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '120.256'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "100 Hits Of The 90'S"
'TBPM' (BPM (beats per minute))                     '120.256'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'I Believe I Can Fly (Radio Edit)  '
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'R. Kelly'
'TRCK' (Track number/Position in set)               '81'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rnb', 'soul', 'rap', 'hip hop']
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.37 dB'
'TXXX:replaygain_track_peak'                        '0.438483'

========================== row from database ==========================
                                              'id'  1306615
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/81 I Believe I Can Fly.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  282
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  11301695
                                           'mtime'  1620566796
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 81 electronic generic or radio unsorted
                                      'tag_artist'  R. Kelly
                                     'tag_release'  100 Hits Of The 90'S
                                       'tag_title'  I Believe I Can Fly (Radio Edit)  
                                             'bpm'  120.256
                                    'search_title'  'believe':2 'can':3 'edit':7,8 'fly':4 'i':1 'radio':5,6
                                   'search_artist'  'kelly':3 'r':1,2
                                  'search_release'  '100':1 '90':5 '90s':7 'hits':2 'of':3 's':6 'the':4
                                     'search_rest'  '00poprockelectronic':1 '81':3 '90s':2 'electronic':4 'generic':5 'or':6 'radio':7 'unsorted':8
                                    'search_combo'  '00poprockelectronic':19 '100':12C '81':21 '90':16C '90s':18C,20 'believe':2A 'can':3A 'edit':7A,8A 'electronic':22 'fly':4A 'generic':23 'hits':13C 'i':1A 'kelly':11B 'of':14C 'or':24 'r':9B,10B 'radio':5A,6A,25 's':17C 'the':15C 'unsorted':26
                                    'tag_tracknum'  81
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rnb', 'soul', 'rap', 'hip hop']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620566796.4853904  (2021-05-09 15:26:36)
                             'size'  11301695