======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '161'
                                          'artist'  'Nancy Sinatra'
                                     'text_people'  ''
                                         'release'  '100 No 1 Hits vol 2'
                                           'title'  'These boots are made for walking'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']")
                                      'lastfmtags'  "['oldies', 'female vocalists', 'pop', '60s', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '84.000'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '100 No 1 Hits vol 2'
'TBPM' (BPM (beats per minute))                     '84.000'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'These boots are made for walking'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nancy Sinatra'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'female vocalists', 'pop', '60s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.67 dB'
'TXXX:replaygain_track_peak'                        '0.424631'

========================== row from database ==========================
                                              'id'  1404368
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/100 No.1 Hits vol.2/100 No.1 Hits vol.2 cd 1/cd1 16 Nancy Sinatra - These boots are made for walking.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  161
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  4522632
                                           'mtime'  1620558252
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat No.1 vol.2 No.1 vol.2 cd cd1 16 electronic generic radio dance
                                      'tag_artist'  Nancy Sinatra
                                     'tag_release'  100 No 1 Hits vol 2
                                       'tag_title'  These boots are made for walking
                                             'bpm'  84.0
                                    'search_title'  'are':3 'boots':2 'for':5 'made':4 'these':1 'walking':6
                                   'search_artist'  'nancy':1 'sinatra':2
                                  'search_release'  '1':3 '100':1 '2':6 'hits':4 'no':2 'vol':5
                                     'search_rest'  '00poprockelectronic':1 '1':6 '2':9 'cd':11 'cd1':12 'dance':3 'electronic':13 'generic':2 'no':5 'no1':7 'radio':14 'trapbeat':4 'vol':8 'vol2':10
                                    'search_combo'  '00poprockelectronic':15 '1':11C,20 '100':9C '2':14C,23 'are':3A 'boots':2A 'cd':25 'cd1':26 'dance':17 'electronic':27 'for':5A 'generic':16 'hits':12C 'made':4A 'nancy':7B 'no':10C,19 'no1':21 'radio':28 'sinatra':8B 'these':1A 'trapbeat':18 'vol':13C,22 'vol2':24 'walking':6A
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-3', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'female vocalists', 'pop', '60s', 'classic rock']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620558251.789291  (2021-05-09 13:04:11)
                             'size'  4522632