======================== unified (from filesystem) ========================
                                         'bitrate'  '159.988'
                                        'duration'  '334'
                                          'artist'  'Cheap Trick'
                                     'text_people'  ''
                                         'release'  'Billboard Top 100 - 1988'
                                           'title'  'Flame'
                                           '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-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['power pop', '80s', 'rock', 'hard rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1988'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard'
                                             'bpm'  '97.085'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'COMM:Track:Comments:eng'                           'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top 100 - 1988'
'TBPM' (BPM (beats per minute))                     '97.085'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex', 'set-pl-billboard']
'TDRC' (Recording time)                             '1988'
'TIT2' (Title/songname/content description)         'Flame'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Cheap Trick'
'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'                                   ['power pop', '80s', '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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.35 dB'
'TXXX:replaygain_track_peak'                        '0.457419'

========================== row from database ==========================
                                              'id'  1352242
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/014 - Cheap Trick - Flame.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  334
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex;set-pl-billboard
                                        'filesize'  6696709
                                           'mtime'  1620737040
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 014 electronic generic or radio unsorted;rock cppex;set pl billboard
                                      'tag_artist'  Cheap Trick
                                     'tag_release'  Billboard Top 100 - 1988
                                       'tag_title'  Flame
                                             'bpm'  97.085
                                    'search_title'  'flame':1
                                   'search_artist'  'cheap':1 'trick':2
                                  'search_release'  '100':3 '1988':4 'billboard':1 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':15 'cppex':10,12 'electronic':2 'generic':3 'or':4 'pl':14 'radio':5 'rock':7,9 'set':11,13 'unsorted':6,8
                                    'search_combo'  '00poprockelectronic':8 '100':6C '1988':7C 'billboard':4C,22 'cheap':2B 'cppex':17,19 'electronic':9 'flame':1A 'generic':10 'or':11 'pl':21 'radio':12 'rock':14,16 'set':18,20 'top':5C 'trick':3B 'unsorted':13,15
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           '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-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['power pop', '80s', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1988
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737039.5926523  (2021-05-11 14:43:59)
                             'size'  6696709