======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '183'
                                          'artist'  'B J Thomas'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  "Don't Worry Baby"
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['oldies', 'pop', '60s', 'blues', 'american']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '96'
                                      'tracktotal'  ''
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '121.264'
                                             'key'  '9A'
                                        '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))                     '121.264'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         "Don't Worry Baby"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'B J Thomas'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '96'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'pop', '60s', 'blues', 'american']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.21 dB'
'TXXX:replaygain_track_peak'                        '0.790396'

========================== row from database ==========================
                                              'id'  1504218
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1977/096 - B J Thomas - Don_t Worry Baby.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  183
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3673714
                                           'mtime'  1620385172
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1977 096 Don_t electronic generic radio unsorted;set pl billboard
                                      'tag_artist'  B J Thomas
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Don't Worry Baby
                                             'bpm'  121.264
                                    'search_title'  'baby':5 'don':1 'dont':3 't':2 'worry':4
                                   'search_artist'  'b':1 'j':2 'thomas':3
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1977':3 'billboard':14 'don':4 'electronic':6 'generic':7 'pl':13 'radio':8 'set':10,12 't':5 'top100':2 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':15 '1':14C '1977':17 'b':6B 'baby':5A 'billboard':9C,28 'don':1A,18 'dont':3A 'electronic':20 'generic':21 'j':7B 'of':13C 'pl':27 'pop':11C 'radio':22 'set':24,26 'singles':12C 't':2A,19 'thomas':8B 'top':10C 'top100':16 'unsorted':23,25 'worry':4A
                                    'tag_tracknum'  96
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-2', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'pop', '60s', 'blues', 'american']
                                        'tag_date'  1977
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385171.795343  (2021-05-07 12:59:31)
                             'size'  3673714