======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '177'
                                          'artist'  'Four Aces Featuring Al Alberts'
                                     'text_people'  ''
                                         'release'  'Four Aces featuring Al Alberts'
                                           'title'  'I Only Know I Love You'
                                           '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-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '179'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '143.823'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Four Aces featuring Al Alberts'
'TBPM' (BPM (beats per minute))                     '143.823'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'I Only Know I Love You'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Four Aces Featuring Al Alberts'
'TRCK' (Track number/Position in set)               '179'
'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:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+2.24 dB'
'TXXX:replaygain_track_peak'                        '0.499199'

========================== row from database ==========================
                                              'id'  1448512
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-179 - Four Aces Featuring Al Alberts - I Only Know I Love You.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  177
                                           'genre'  prerock-vocal
                                        'filesize'  7108816
                                           'mtime'  1621853347
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 179 prerock vocal
                                      'tag_artist'  Four Aces Featuring Al Alberts
                                     'tag_release'  Four Aces featuring Al Alberts
                                       'tag_title'  I Only Know I Love You
                                             'bpm'  143.823
                                    'search_title'  'i':1 'know':3 'love':4 'only':2 'you':5
                                   'search_artist'  'aces':2 'al':4 'alberts':5 'featuring':3 'four':1
                                  'search_release'  'aces':2 'al':4 'alberts':5 'featuring':3 'four':1
                                     'search_rest'  '00oldiepop':5 '179':7 '1956':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':20 '179':22 '1956':21 'aces':7B,12C 'al':9B,14C 'alberts':10B,15C 'country':19 'exotica':17 'featuring':8B,13C 'four':6B,11C 'i':1A 'jazz':16 'know':3A 'love':4A 'oldies':18 'only':2A 'prerock':23 'vocal':24 'you':5A
                                    'tag_tracknum'  179
                                      'num_images'  0
                                             'key'  6A
                                           '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-4', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853347.0203567  (2021-05-24 12:49:07)
                             'size'  7108816