======================== unified (from filesystem) ========================
                                         'bitrate'  '173.926'
                                        'duration'  '203'
                                          'artist'  'Frankie Valli'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Grease'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', '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-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['swing', 'jazz', 'oldies', '60s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '109.349'
                                             'key'  '2A'
                                        '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))                     '109.349'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         'Grease'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Frankie Valli'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['swing', 'jazz', 'oldies', '60s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                        '+1.17 dB'
'TXXX:replaygain_track_peak'                        '0.754782'

========================== row from database ==========================
                                              'id'  1311511
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1978/011 - Frankie Valli - Grease.mp3
                                         'working'  None
                                         'bitrate'  174
                                    'duration_sec'  203
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  4431327
                                           'mtime'  1678903053
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1978 011 electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Frankie Valli
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Grease
                                             'bpm'  109.349
                                    'search_title'  'grease':1
                                   'search_artist'  'frankie':1 'valli':2
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1978':3 'billboard':13 'electronic':4 'generic':5 'or':6 'pl':12 'radio':7 'set':9,11 'top100':2 'unsorted':8,10
                                    'search_combo'  '00poprockelectronic':10 '1':9C '1978':12 'billboard':4C,22 'electronic':13 'frankie':2B 'generic':14 'grease':1A 'of':8C 'or':15 'pl':21 'pop':6C 'radio':16 'set':18,20 'singles':7C 'top':5C 'top100':11 'unsorted':17,19 'valli':3B
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', '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-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['swing', 'jazz', 'oldies', '60s', 'classic rock']
                                        'tag_date'  1978
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678903053.2804627  (2023-03-15 18:57:33)
                             'size'  4431327