======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '144'
                                          'artist'  'Carl Smith'
                                     'text_people'  ''
                                         'release'  'Treasury Of Country Music (cd'
                                           'title'  'Ten Thousand Drums'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country', 'male country', 'honky tonk', 'classic country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '93.242'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-266 POS 43'
'COMM:ID3v1 Comment:XXX'                            '59-266 POS 43'
'TALB' (Album/Movie/Show title)                     'Treasury Of Country Music (cd'
'TBPM' (BPM (beats per minute))                     '93.242'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Ten Thousand Drums'
'TKEY' (Initial key)                                '2A'
'TPE1' (Lead performer(s)/Soloist(s))               'Carl Smith'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country', 'male country', 'honky tonk', 'classic country']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-4.23 dB'
'TXXX:replaygain_track_peak'                        '0.990011'

========================== row from database ==========================
                                              'id'  1450625
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-266 - Carl Smith - Ten Thousand Drums.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  144
                                           'genre'  prerock-unsorted
                                        'filesize'  5781424
                                           'mtime'  1621698411
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 266 prerock unsorted
                                      'tag_artist'  Carl Smith
                                     'tag_release'  Treasury Of Country Music (cd
                                       'tag_title'  Ten Thousand Drums
                                             'bpm'  93.242
                                    'search_title'  'drums':3 'ten':1 'thousand':2
                                   'search_artist'  'carl':1 'smith':2
                                  'search_release'  'cd':5,6 'country':3 'music':4 'of':2 'treasury':1
                                     'search_rest'  '00oldiepop':5 '1959':6 '266':8 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':16 '1959':17 '266':19 '59':18 'carl':4B 'cd':10C,11C 'country':8C,15 'drums':3A 'exotica':13 'jazz':12 'music':9C 'of':7C 'oldies':14 'prerock':20 'smith':5B 'ten':1A 'thousand':2A 'treasury':6C 'unsorted':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['country', 'male country', 'honky tonk', 'classic country']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698410.8042715  (2021-05-22 17:46:50)
                             'size'  5781424