======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '166'
                                          'artist'  'Nancy Sinatra'
                                     'text_people'  'Lee Hazlewood'
                                         'release'  'The Hit Years'
                                           'title'  "These Boots Are Made for Walkin'"
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['oldies', 'female vocalists', 'pop', '60s', 'classic rock']"
                                     'discogstags'  "['soft rock', 'country rock', 'rock', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1986'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '84.420'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Hit Years'
'TBPM' (BPM (beats per minute))                     '84.420'
'TCOM' (Composer)                                   'Lee Hazlewood'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1986'
'TIT2' (Title/songname/content description)         "These Boots Are Made for Walkin'"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Nancy Sinatra'
'TPE2' (Band/orchestra/accompaniment)               'Nancy Sinatra'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['soft rock', 'country rock', 'rock', 'pop']
'TXXX:lastfmtags'                                   ['oldies', 'female vocalists', 'pop', '60s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.89 dB'
'TXXX:replaygain_track_peak'                        '0.715916'

========================== row from database ==========================
                                              'id'  1520845
                                            'path'  /data/Music/Bulk/00poprockelectronic/set/02 These Boots Are Made for Walkin_.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  166
                                           'genre'  rock-cppex
                                        'filesize'  6675512
                                           'mtime'  1620737490
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic set 02 Walkin_ rock cppex
                                      'tag_artist'  Nancy Sinatra
                                     'tag_release'  The Hit Years
                                       'tag_title'  These Boots Are Made for Walkin'
                                             'bpm'  84.42
                                    'search_title'  'are':3 'boots':2 'for':5 'made':4 'these':1 'walkin':6,7
                                   'search_artist'  'nancy':1 'sinatra':2
                                  'search_release'  'hit':2 'the':1 'years':3
                                     'search_rest'  '00poprockelectronic':1 'cppex':5 'rock':4 'set':2 'walkin':3
                                    'search_combo'  '00poprockelectronic':13 'are':3A 'boots':2A 'cppex':17 'for':5A 'hit':11C 'made':4A 'nancy':8B 'rock':16 'set':14 'sinatra':9B 'the':10C 'these':1A 'walkin':6A,7A,15 'years':12C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'female vocalists', 'pop', '60s', 'classic rock']
                                        'tag_date'  1986
                                     'discogstags'  ['soft rock', 'country rock', 'rock', 'pop']

============================== file details ==============================
                                           'mtime'  1620737490.406833  (2021-05-11 14:51:30)
                             'size'  6675512