======================== unified (from filesystem) ========================
                                         'bitrate'  '159.986'
                                        'duration'  '301'
                                          'artist'  'Journey'
                                     'text_people'  ''
                                         'release'  'Billboard Top 100 - 1981'
                                           'title'  "Who's Crying Now"
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'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-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'progressive rock', 'rock', 'hard rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1981'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard'
                                             'bpm'  '121.264'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'COMM:Track:Comments:eng'                           'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top 100 - 1981'
'TBPM' (BPM (beats per minute))                     '121.264'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex', 'set-pl-billboard']
'TDRC' (Recording time)                             '1981'
'TIT2' (Title/songname/content description)         "Who's Crying Now"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Journey'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'progressive rock', 'rock', 'hard rock', 'classic rock']
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+4.61 dB'
'TXXX:replaygain_track_peak'                        '0.454261'

========================== row from database ==========================
                                              'id'  1519026
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/056 - Journey - Who_s Crying Now.mp3
                                         'working'  None
                                         'bitrate'  159
                                    'duration_sec'  301
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard
                                        'filesize'  6025884
                                           'mtime'  1620737041
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 056 Who_s electronic generic or radio unsorted;rock cppex;set pl billboard
                                      'tag_artist'  Journey
                                     'tag_release'  Billboard Top 100 - 1981
                                       'tag_title'  Who's Crying Now
                                             'bpm'  121.264
                                    'search_title'  'crying':4 'now':5 's':2 'who':1 'whos':3
                                   'search_artist'  'journey':1
                                  'search_release'  '100':3 '1981':4 'billboard':1 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':17 'cppex':12,14 'electronic':4 'generic':5 'or':6 'pl':16 'radio':7 'rock':9,11 's':3 'set':13,15 'unsorted':8,10 'who':2
                                    'search_combo'  '00poprockelectronic':11 '100':9C '1981':10C 'billboard':7C,27 'cppex':22,24 'crying':4A 'electronic':14 'generic':15 'journey':6B 'now':5A 'or':16 'pl':26 'radio':17 'rock':19,21 's':2A,13 'set':23,25 'top':8C 'unsorted':18,20 'who':1A,12 'whos':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'progressive rock', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1981
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737040.5455785  (2021-05-11 14:44:00)
                             'size'  6025884