======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '205'
                                          'artist'  'Stealers Wheel'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1973'
                                           'title'  'Stuck In The Middle With You'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-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-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['folk rock', 'oldies', '70s', 'rock', 'folk', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '30'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex'
                                             'bpm'  '124.315'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1973'
'TBPM' (BPM (beats per minute))                     '124.315'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex']
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         'Stuck In The Middle With You'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Stealers Wheel'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '30'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['folk rock', 'oldies', '70s', 'rock', 'folk', '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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.54 dB'
'TXXX:replaygain_track_peak'                        '0.725360'

========================== row from database ==========================
                                              'id'  1306883
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1973/030 - Stealers Wheel - Stuck In The Middle With You.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  205
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex
                                        'filesize'  4101576
                                           'mtime'  1620737090
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 030 electronic generic or radio unsorted;rock cppex
                                      'tag_artist'  Stealers Wheel
                                     'tag_release'  Billboard Top Pop Singles of 1973
                                       'tag_title'  Stuck In The Middle With You
                                             'bpm'  124.315
                                    'search_title'  'in':2 'middle':4 'stuck':1 'the':3 'with':5 'you':6
                                   'search_artist'  'stealers':1 'wheel':2
                                  'search_release'  '1973':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'cppex':11 'electronic':3 'generic':4 'or':5 'radio':6 'rock':8,10 'top100':2 'unsorted':7,9
                                    'search_combo'  '00poprockelectronic':15 '1973':14C 'billboard':9C 'cppex':25 'electronic':17 'generic':18 'in':2A 'middle':4A 'of':13C 'or':19 'pop':11C 'radio':20 'rock':22,24 'singles':12C 'stealers':7B 'stuck':1A 'the':3A 'top':10C 'top100':16 'unsorted':21,23 'wheel':8B 'with':5A 'you':6A
                                    'tag_tracknum'  30
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'oldies', '70s', 'rock', 'folk', 'classic rock']
                                        'tag_date'  1973
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737089.7370267  (2021-05-11 14:44:49)
                             'size'  4101576