======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '168'
                                          'artist'  'Sammy Davis Jr.'
                                     'text_people'  ''
                                         'release'  'US-Billboard-Charts'
                                           'title'  'The Red Grapes'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'oldies', 'rat pack', 'male vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '97'
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '145.685'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '54-300 POS 28'
'COMM:ID3v1 Comment:XXX'                            '54-300 POS 28'
'TALB' (Album/Movie/Show title)                     'US-Billboard-Charts'
'TBPM' (BPM (beats per minute))                     '145.685'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1954'
'TIT2' (Title/songname/content description)         'The Red Grapes'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sammy Davis Jr.'
'TRCK' (Track number/Position in set)               '97'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'oldies', 'rat pack', 'male vocalists']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.73 dB'
'TXXX:replaygain_track_peak'                        '0.537428'

========================== row from database ==========================
                                              'id'  1447131
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/54-300 - Sammy Davis, Jr. - The Red Grapes.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  168
                                           'genre'  prerock-swing
                                        'filesize'  6725924
                                           'mtime'  1620562495
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 54 300 Davis, prerock swing
                                      'tag_artist'  Sammy Davis Jr.
                                     'tag_release'  US-Billboard-Charts
                                       'tag_title'  The Red Grapes
                                             'bpm'  145.685
                                    'search_title'  'grapes':3 'red':2 'the':1
                                   'search_artist'  'davis':2 'jr':3,4 'sammy':1
                                  'search_release'  'billboard':2 'charts':3 'us':1 'usbillboardcharts':4
                                     'search_rest'  '00oldiepop':5 '1954':6 '300':8 '54':7 'country':4 'davis':9,10 'exotica':2 'jazz':1 'oldies':3 'prerock':11 'swing':12
                                    'search_combo'  '00oldiepop':16 '1954':17 '300':19 '54':18 'billboard':9C 'charts':10C 'country':15 'davis':5B,20,21 'exotica':13 'grapes':3A 'jazz':12 'jr':6B,7B 'oldies':14 'prerock':22 'red':2A 'sammy':4B 'swing':23 'the':1A 'us':8C 'usbillboardcharts':11C
                                    'tag_tracknum'  97
                                      'num_images'  0
                                             'key'  9A
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'oldies', 'rat pack', 'male vocalists']
                                        'tag_date'  1954
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562494.5094059  (2021-05-09 14:14:54)
                             'size'  6725924