======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '241'
                                          'artist'  'Paul Mccartney & Wings'
                                     'text_people'  ''
                                         'release'  'Billboard Top Pop Singles of 1'
                                           'title'  'Listen To What The Man Said'
                                           '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-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['pop', 'rock', 'british', '70s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '41'
                                      'tracktotal'  ''
                                            'date'  '1975'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted;set-pl-billboard'
                                             'bpm'  '112.758'
                                             'key'  '10B'
                                        '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))                     '112.758'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1975'
'TIT2' (Title/songname/content description)         'Listen To What The Man Said'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Paul Mccartney & Wings'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '41'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'rock', 'british', '70s', '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'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.90 dB'
'TXXX:replaygain_track_peak'                        '0.461822'

========================== row from database ==========================
                                              'id'  1301371
                                            'path'  /data/Music/Bulk/00poprockelectronic/Billboard/Billboard Top100/1975/041 - Paul McCartney & Wings - Listen To What The Man Said.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  241
                                           'genre'  electronic-generic or radio-unsorted;set-pl-billboard
                                        'filesize'  4823086
                                           'mtime'  1620385105
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Top100 1975 041 McCartney electronic generic or radio unsorted;set pl billboard
                                      'tag_artist'  Paul Mccartney & Wings
                                     'tag_release'  Billboard Top Pop Singles of 1
                                       'tag_title'  Listen To What The Man Said
                                             'bpm'  112.758
                                    'search_title'  'listen':1 'man':5 'said':6 'the':4 'to':2 'what':3
                                   'search_artist'  'mccartney':2 'paul':1 'wings':3
                                  'search_release'  '1':6 'billboard':1 'of':5 'pop':3 'singles':4 'top':2
                                     'search_rest'  '00poprockelectronic':1 '1975':3 'billboard':14 'cartney':16 'electronic':5 'generic':6 'mc':15 'mccartney':4 'or':7 'pl':13 'radio':8 'set':10,12 'top100':2 'unsorted':9,11
                                    'search_combo'  '00poprockelectronic':16 '1':15C '1975':18 'billboard':10C,29 'cartney':31 'electronic':20 'generic':21 'listen':1A 'man':5A 'mc':30 'mccartney':8B,19 'of':14C 'or':22 'paul':7B 'pl':28 'pop':12C 'radio':23 'said':6A 'set':25,27 'singles':13C 'the':4A 'to':2A 'top':11C 'top100':17 'unsorted':24,26 'what':3A 'wings':9B
                                    'tag_tracknum'  41
                                      'num_images'  0
                                             'key'  10B
                                           '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-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', 'british', '70s', 'classic rock']
                                        'tag_date'  1975
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620385105.4605083  (2021-05-07 12:58:25)
                             'size'  4823086