======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '193'
                                          'artist'  'Barry Manilow'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  "Can't Smile Without You"
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-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-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['80s', 'soft rock', 'oldies', 'pop', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '27'
                                      'tracktotal'  ''
                                            'date'  '1978'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '97.883'
                                             '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))                     '97.883'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1978'
'TIT2' (Title/songname/content description)         "Can't Smile Without You"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Barry Manilow'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '27'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'soft rock', 'oldies', 'pop', 'easy listening']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                        '+0.76 dB'
'TXXX:replaygain_track_peak'                        '0.546173'

========================== row from database ==========================
                                              'id'  1499036
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1978/027 - Barry Manilow - Can_t Smile Without You.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  193
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  3874231
                                           'mtime'  1620385182
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1978 027 Can_t electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Barry Manilow
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Can't Smile Without You
                                             'bpm'  97.883
                                    'search_title'  'can':1 'cant':3 'smile':4 't':2 'without':5 'you':6
                                   'search_artist'  'barry':1 'manilow':2
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1978':3 'billboard':15 'can':4 'electronic':6 'generic':7 'or':8 'pl':14 'radio':9 'set':11,13 't':5 'top100':2 'unsorted':10,12
                                    'search_combo'  '00poprockelectronic':15 '1':14C '1978':17 'barry':7B 'billboard':9C,29 'can':1A,18 'cant':3A 'electronic':20 'generic':21 'manilow':8B 'of':13C 'or':22 'pl':28 'pop':11C 'radio':23 'set':25,27 'singles':12C 'smile':4A 't':2A,19 'top':10C 'top100':16 'unsorted':24,26 'without':5A 'you':6A
                                    'tag_tracknum'  27
                                      '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-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'soft rock', 'oldies', 'pop', 'easy listening']
                                        'tag_date'  1978
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385182.2076144  (2021-05-07 12:59:42)
                             'size'  3874231