======================== unified (from filesystem) ========================
                                         'bitrate'  '319.725'
                                        'duration'  '135'
                                          'artist'  'Don Cornell'
                                     'text_people'  ''
                                         'release'  'Discovered - Volume 1'
                                           'title'  'Teenage Meeting (Gonna Rock It Up Right)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'vocal', '50s', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '430'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '88.982'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Discovered - Volume 1'
'TBPM' (BPM (beats per minute))                     '88.982'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1956'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Burst mode)'
'TIT2' (Title/songname/content description)         'Teenage Meeting (Gonna Rock It Up Right)'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Don Cornell'
'TRCK' (Track number/Position in set)               '430'
'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'                                   ['oldies', 'vocal', '50s', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'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'                        '+2.52 dB'
'TXXX:replaygain_track_peak'                        '0.348796'

========================== row from database ==========================
                                              'id'  1436211
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-430 - Don Cornell - Teenage Meeting (Gonna Rock It Up Right).mp3
                                         'working'  None
                                         'bitrate'  319
                                    'duration_sec'  135
                                           'genre'  prerock-vocal
                                        'filesize'  5424785
                                           'mtime'  1621853350
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 430 prerock vocal
                                      'tag_artist'  Don Cornell
                                     'tag_release'  Discovered - Volume 1
                                       'tag_title'  Teenage Meeting (Gonna Rock It Up Right)
                                             'bpm'  88.982
                                    'search_title'  'gonna':3,4 'it':6 'meeting':2 'right':8,9 'rock':5 'teenage':1 'up':7
                                   'search_artist'  'cornell':2 'don':1
                                  'search_release'  '1':3 'discovered':1 'volume':2
                                     'search_rest'  '00oldiepop':5 '1956':6 '430':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':19 '1':14C '1956':20 '430':21 'cornell':11B 'country':18 'discovered':12C 'don':10B 'exotica':16 'gonna':3A,4A 'it':6A 'jazz':15 'meeting':2A 'oldies':17 'prerock':22 'right':8A,9A 'rock':5A 'teenage':1A 'up':7A 'vocal':23 'volume':13C
                                    'tag_tracknum'  430
                                      'num_images'  0
                                             'key'  4B
                                           '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-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['oldies', 'vocal', '50s', 'pop']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853350.1500173  (2021-05-24 12:49:10)
                             'size'  5424785