======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '358'
                                          'artist'  'Boston'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1978'
                                           'title'  "Don't Look Back"
                                           '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-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['70s', 'rock', '80s', 'hard rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '93'
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;rock-cppex'
                                             'bpm'  '124.315'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1978'
'TBPM' (BPM (beats per minute))                     '124.315'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'rock-cppex']
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         "Don't Look Back"
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Boston'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '93'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['70s', 'rock', '80s', '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'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.09 dB'
'TXXX:replaygain_track_peak'                        '0.519119'

========================== row from database ==========================
                                              'id'  1499084
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1978/093 - Boston - Don_t Look Back.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  358
                                           'genre'  electronic-generic or radio-unsorted;rock-cppex
                                        'filesize'  7167453
                                           'mtime'  1620737149
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 093 Don_t electronic generic or radio unsorted;rock cppex
                                      'tag_artist'  Boston
                                     'tag_release'  Billboard Top Pop Singles of 1978
                                       'tag_title'  Don't Look Back
                                             'bpm'  124.315
                                    'search_title'  'back':5 'don':1 'dont':3 'look':4 't':2
                                   'search_artist'  'boston':1
                                  'search_release'  '1978':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'cppex':13 'don':3 'electronic':5 'generic':6 'or':7 'radio':8 'rock':10,12 't':4 'top100':2 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':13 '1978':12C 'back':5A 'billboard':7C 'boston':6B 'cppex':25 'don':1A,15 'dont':3A 'electronic':17 'generic':18 'look':4A 'of':11C 'or':19 'pop':9C 'radio':20 'rock':22,24 'singles':10C 't':2A,16 'top':8C 'top100':14 'unsorted':21,23
                                    'tag_tracknum'  93
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', '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'  ['70s', 'rock', '80s', 'hard rock', 'classic rock']
                                        'tag_date'  1978
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737149.4696088  (2021-05-11 14:45:49)
                             'size'  7167453