======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '204'
                                          'artist'  'Elvis Presley'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "(There'll Be) Peace In The Valley (For Me)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-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-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '202'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rocknroll'
                                             'bpm'  '134.199'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '134.199'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rocknroll'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         "(There'll Be) Peace In The Valley (For Me)"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Elvis Presley'
'TRCK' (Track number/Position in set)               '202'
'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'                                   ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.73 dB'
'TXXX:replaygain_track_peak'                        '0.593399'

========================== row from database ==========================
                                              'id'  1496581
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/1957-202 - Elvis Presley - (There_ll Be) Peace In The Valley (For Me).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  204
                                           'genre'  rock-pop-early-rocknroll
                                        'filesize'  8165248
                                           'mtime'  1622659473
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 1957 202 (There_ll rock pop early rocknroll
                                      'tag_artist'  Elvis Presley
                                     'tag_release'  None
                                       'tag_title'  (There'll Be) Peace In The Valley (For Me)
                                             'bpm'  134.199
                                    'search_title'  'be':4,5 'for':10,11 'in':7 'll':2 'me':12,13 'peace':6 'the':8 'there':1 'therell':3 'valley':9
                                   'search_artist'  'elvis':1 'presley':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1957':6 '202':7 'country':4 'early':14 'exotica':2 'jazz':1 'll':9,11 'oldies':3 'pop':13 'rock':12 'rocknroll':15 'there':8,10
                                    'search_combo'  '00oldiepop':20 '1957':21 '202':22 'be':4A,5A 'country':19 'early':29 'elvis':14B 'exotica':17 'for':10A,11A 'in':7A 'jazz':16 'll':2A,24,26 'me':12A,13A 'oldies':18 'peace':6A 'pop':28 'presley':15B 'rock':27 'rocknroll':30 'the':8A 'there':1A,23,25 'therell':3A 'valley':9A
                                    'tag_tracknum'  202
                                      'num_images'  0
                                             'key'  8B
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'rock n roll', 'rock', 'oldies', 'classic rock']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659472.7272918  (2021-06-02 20:44:32)
                             'size'  8165248