======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '238'
                                          'artist'  'Andrew Gold'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Lonely Boy'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-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-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['male vocalists', 'pop', '70s', '80s', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '50'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;ifs-songwriter-pop;set-pl-billboard'
                                             'bpm'  '124.163'
                                             'key'  '11A'
                                        '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))                     '124.163'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted',
 'ifs-songwriter-pop',
 'set-pl-billboard']
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Lonely Boy'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Andrew Gold'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '50'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['male vocalists', 'pop', '70s', '80s', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                        '+0.08 dB'
'TXXX:replaygain_track_peak'                        '0.590282'

========================== row from database ==========================
                                              'id'  1356375
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1977/050 - Andrew Gold - Lonely Boy.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  238
                                           'genre'  electronic-generic or radio-unsorted;ifs-songwriter-pop;set-pl-billboard
                                        'filesize'  4767237
                                           'mtime'  1642256378
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1977 050 electronic generic or radio unsorted;ifs songwriter pop;set pl billboard
                                      'tag_artist'  Andrew Gold
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Lonely Boy
                                             'bpm'  124.163
                                    'search_title'  'boy':2 'lonely':1
                                   'search_artist'  'andrew':1 'gold':2
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1977':3 'billboard':18 'electronic':4 'generic':5 'ifs':9,11 'or':6 'pl':17 'pop':13,15 'radio':7 'set':14,16 'songwriter':12 'top100':2 'unsorted':8,10
                                    'search_combo'  '00poprockelectronic':11 '1':10C '1977':13 'andrew':3B 'billboard':5C,28 'boy':2A 'electronic':14 'generic':15 'gold':4B 'ifs':19,21 'lonely':1A 'of':9C 'or':16 'pl':27 'pop':7C,23,25 'radio':17 'set':24,26 'singles':8C 'songwriter':22 'top':6C 'top100':12 'unsorted':18,20
                                    'tag_tracknum'  50
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-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-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['male vocalists', 'pop', '70s', '80s', 'singer songwriter']
                                        'tag_date'  1977
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642256377.5214334  (2022-01-15 15:19:37)
                             'size'  4767237