======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '124'
                                          'artist'  'Eddie Hodges'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1961'
                                           'title'  "I'm Gonna Knock On Your Door"
                                           '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-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['pop', '60s', 'oldies', 'male vocalists', 'usa']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '92'
                                      'tracktotal'  ''
                                            'date'  '1961'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '84.035'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'Billboard'
'TALB' (Album/Movie/Show title)                     'Billboard Top Pop Singles of 1961'
'TBPM' (BPM (beats per minute))                     '84.035'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1961'
'TIT2' (Title/songname/content description)         "I'm Gonna Knock On Your Door"
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Eddie Hodges'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '92'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', '60s', 'oldies', 'male vocalists', 'usa']
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.20 dB'
'TXXX:replaygain_track_peak'                        '0.467483'

========================== row from database ==========================
                                              'id'  1515140
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1961/092 - Eddie Hodges  - I_m Gonna Knock On Your Door.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  124
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  2983372
                                           'mtime'  1620384907
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 092 I_m electronic generic radio unsorted;set pl billboard
                                      'tag_artist'  Eddie Hodges
                                     'tag_release'  Billboard Top Pop Singles of 1961
                                       'tag_title'  I'm Gonna Knock On Your Door
                                             'bpm'  84.035
                                    'search_title'  'door':8 'gonna':4 'i':1 'im':3 'knock':5 'm':2 'on':6 'your':7
                                   'search_artist'  'eddie':1 'hodges':2
                                  'search_release'  '1961':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 'billboard':13 'electronic':5 'generic':6 'i':3 'm':4 'pl':12 'radio':7 'set':9,11 'top100':2 'unsorted':8,10
                                    'search_combo'  '00poprockelectronic':17 '1961':16C 'billboard':11C,29 'door':8A 'eddie':9B 'electronic':21 'generic':22 'gonna':4A 'hodges':10B 'i':1A,19 'im':3A 'knock':5A 'm':2A,20 'of':15C 'on':6A 'pl':28 'pop':13C 'radio':23 'set':25,27 'singles':14C 'top':12C 'top100':18 'unsorted':24,26 'your':7A
                                    'tag_tracknum'  92
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', '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'  ['pop', '60s', 'oldies', 'male vocalists', 'usa']
                                        'tag_date'  1961
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620384907.3486295  (2021-05-07 12:55:07)
                             'size'  2983372